Finding the Fourth Proportional to 103,037.31, 142,189.83 and 57,715.14

Step by Step Solution

1. Step 1: Write the proportion equation
   103,037.31 : 142,189.83 = 57,715.14 : x
2. Step 2: Convert to fraction form
   103,037.31/142,189.83 = 57,715.14/x
3. Step 3: Cross multiply
   103,037.31x = 142,189.83 × 57,715.14
4. Step 4: Simplify right side
   103,037.31x = 8,206,505,945.03
5. Step 5: Solve for x
   x = 8,206,505,945.03/103,037.31
6. Step 6: Final answer
   x = 79,645.96