Finding the Fourth Proportional to 103,350.69, 142,620.17 and 63,131.76

Step by Step Solution

1. Step 1: Write the proportion equation
   103,350.69 : 142,620.17 = 63,131.76 : x
2. Step 2: Convert to fraction form
   103,350.69/142,620.17 = 63,131.76/x
3. Step 3: Cross multiply
   103,350.69x = 142,620.17 × 63,131.76
4. Step 4: Simplify right side
   103,350.69x = 9,003,862,027.94
5. Step 5: Solve for x
   x = 9,003,862,027.94/103,350.69
6. Step 6: Final answer
   x = 87,119.52