Finding the Fourth Proportional to 102,932.37, 142,034.72 and 57,612.87

Step by Step Solution

1. Step 1: Write the proportion equation
   102,932.37 : 142,034.72 = 57,612.87 : x
2. Step 2: Convert to fraction form
   102,932.37/142,034.72 = 57,612.87/x
3. Step 3: Cross multiply
   102,932.37x = 142,034.72 × 57,612.87
4. Step 4: Simplify right side
   102,932.37x = 8,183,027,570.78
5. Step 5: Solve for x
   x = 8,183,027,570.78/102,932.37
6. Step 6: Final answer
   x = 79,499.07