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Finding the Fourth Proportional to 98,991.36, 136,615.29 and 56,548.98

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Solution

The fourth proportional to 98,991.36, 136,615.29 and 56,548.98 is: 78,041.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,991.36 : 136,615.29 = 56,548.98 : x
  2. Step 2: Convert to fraction form
    98,991.36/136,615.29 = 56,548.98/x
  3. Step 3: Cross multiply
    98,991.36x = 136,615.29 × 56,548.98
  4. Step 4: Simplify right side
    98,991.36x = 7,725,455,301.90
  5. Step 5: Solve for x
    x = 7,725,455,301.90/98,991.36
  6. Step 6: Final answer
    x = 78,041.71

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