Finding the Fourth Proportional to 103,053.42, 142,222.32 and 57,730.50

Step by Step Solution

1. Step 1: Write the proportion equation
   103,053.42 : 142,222.32 = 57,730.50 : x
2. Step 2: Convert to fraction form
   103,053.42/142,222.32 = 57,730.50/x
3. Step 3: Cross multiply
   103,053.42x = 142,222.32 × 57,730.50
4. Step 4: Simplify right side
   103,053.42x = 8,210,565,644.76
5. Step 5: Solve for x
   x = 8,210,565,644.76/103,053.42
6. Step 6: Final answer
   x = 79,672.91