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Finding the Fourth Proportional to 145,868.74, 218,783.66 and 40,678.90

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Solution

The fourth proportional to 145,868.74, 218,783.66 and 40,678.90 is: 61,012.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,868.74 : 218,783.66 = 40,678.90 : x
  2. Step 2: Convert to fraction form
    145,868.74/218,783.66 = 40,678.90/x
  3. Step 3: Cross multiply
    145,868.74x = 218,783.66 × 40,678.90
  4. Step 4: Simplify right side
    145,868.74x = 8,899,878,626.77
  5. Step 5: Solve for x
    x = 8,899,878,626.77/145,868.74
  6. Step 6: Final answer
    x = 61,012.93

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