Finding the Fourth Proportional to 78,715.98, 108,624.90 and 42,905.24

Step by Step Solution

1. Step 1: Write the proportion equation
   78,715.98 : 108,624.90 = 42,905.24 : x
2. Step 2: Convert to fraction form
   78,715.98/108,624.90 = 42,905.24/x
3. Step 3: Cross multiply
   78,715.98x = 108,624.90 × 42,905.24
4. Step 4: Simplify right side
   78,715.98x = 4,660,577,404.48
5. Step 5: Solve for x
   x = 4,660,577,404.48/78,715.98
6. Step 6: Final answer
   x = 59,207.51