Finding the Fourth Proportional to 78,363.98, 108,142.30 and 42,554

Step by Step Solution

1. Step 1: Write the proportion equation
   78,363.98 : 108,142.30 = 42,554 : x
2. Step 2: Convert to fraction form
   78,363.98/108,142.30 = 42,554/x
3. Step 3: Cross multiply
   78,363.98x = 108,142.30 × 42,554
4. Step 4: Simplify right side
   78,363.98x = 4,601,887,434.20
5. Step 5: Solve for x
   x = 4,601,887,434.20/78,363.98
6. Step 6: Final answer
   x = 58,724.52