Finding the Fourth Proportional to 78,375, 108,157.70 and 42,565.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78,375 : 108,157.70 = 42,565.62 : x
2. Step 2: Convert to fraction form
   78,375/108,157.70 = 42,565.62/x
3. Step 3: Cross multiply
   78,375x = 108,157.70 × 42,565.62
4. Step 4: Simplify right side
   78,375x = 4,603,799,558.27
5. Step 5: Solve for x
   x = 4,603,799,558.27/78,375
6. Step 6: Final answer
   x = 58,740.66