Finding the Fourth Proportional to 78,338.95, 108,108.27 and 42,529.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,338.95 : 108,108.27 = 42,529.15 : x
2. Step 2: Convert to fraction form
   78,338.95/108,108.27 = 42,529.15/x
3. Step 3: Cross multiply
   78,338.95x = 108,108.27 × 42,529.15
4. Step 4: Simplify right side
   78,338.95x = 4,597,752,966.21
5. Step 5: Solve for x
   x = 4,597,752,966.21/78,338.95
6. Step 6: Final answer
   x = 58,690.51