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Finding the Fourth Proportional to 99,781,996.80, 149,798,966.40 and 53,760,518.40

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Solution

The fourth proportional to 99,781,996.80, 149,798,966.40 and 53,760,518.40 is: 80,708,648.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,781,996.80 : 149,798,966.40 = 53,760,518.40 : x
  2. Step 2: Convert to fraction form
    99,781,996.80/149,798,966.40 = 53,760,518.40/x
  3. Step 3: Cross multiply
    99,781,996.80x = 149,798,966.40 × 53,760,518.40
  4. Step 4: Simplify right side
    99,781,996.80x = 8,053,270,089,448,182
  5. Step 5: Solve for x
    x = 8,053,270,089,448,182/99,781,996.80
  6. Step 6: Final answer
    x = 80,708,648.33

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