Finding the Fourth Proportional to 78,471.43, 108,292.71 and 42,663.91

Step by Step Solution

1. Step 1: Write the proportion equation
   78,471.43 : 108,292.71 = 42,663.91 : x
2. Step 2: Convert to fraction form
   78,471.43/108,292.71 = 42,663.91/x
3. Step 3: Cross multiply
   78,471.43x = 108,292.71 × 42,663.91
4. Step 4: Simplify right side
   78,471.43x = 4,620,190,433.10
5. Step 5: Solve for x
   x = 4,620,190,433.10/78,471.43
6. Step 6: Final answer
   x = 58,877.36