Finding the Fourth Proportional to 78,535.86, 108,377.02 and 42,724.96

Step by Step Solution

1. Step 1: Write the proportion equation
   78,535.86 : 108,377.02 = 42,724.96 : x
2. Step 2: Convert to fraction form
   78,535.86/108,377.02 = 42,724.96/x
3. Step 3: Cross multiply
   78,535.86x = 108,377.02 × 42,724.96
4. Step 4: Simplify right side
   78,535.86x = 4,630,403,844.42
5. Step 5: Solve for x
   x = 4,630,403,844.42/78,535.86
6. Step 6: Final answer
   x = 58,959.10