Finding the Fourth Proportional to 103,375, 142,679.72 and 63,080.12

Step by Step Solution

1. Step 1: Write the proportion equation
   103,375 : 142,679.72 = 63,080.12 : x
2. Step 2: Convert to fraction form
   103,375/142,679.72 = 63,080.12/x
3. Step 3: Cross multiply
   103,375x = 142,679.72 × 63,080.12
4. Step 4: Simplify right side
   103,375x = 9,000,253,859.17
5. Step 5: Solve for x
   x = 9,000,253,859.17/103,375
6. Step 6: Final answer
   x = 87,064.12