Finding the Fourth Proportional to 78,331.43, 108,097.60 and 42,521.47

Step by Step Solution

1. Step 1: Write the proportion equation
   78,331.43 : 108,097.60 = 42,521.47 : x
2. Step 2: Convert to fraction form
   78,331.43/108,097.60 = 42,521.47/x
3. Step 3: Cross multiply
   78,331.43x = 108,097.60 × 42,521.47
4. Step 4: Simplify right side
   78,331.43x = 4,596,468,770.46
5. Step 5: Solve for x
   x = 4,596,468,770.46/78,331.43
6. Step 6: Final answer
   x = 58,679.75