Finding the Fourth Proportional to 103,133.96, 142,323.72 and 57,819.32

Step by Step Solution

1. Step 1: Write the proportion equation
   103,133.96 : 142,323.72 = 57,819.32 : x
2. Step 2: Convert to fraction form
   103,133.96/142,323.72 = 57,819.32/x
3. Step 3: Cross multiply
   103,133.96x = 142,323.72 × 57,819.32
4. Step 4: Simplify right side
   103,133.96x = 8,229,060,710.27
5. Step 5: Solve for x
   x = 8,229,060,710.27/103,133.96
6. Step 6: Final answer
   x = 79,790.02