Finding the Fourth Proportional to 78,396.66, 108,188.15 and 42,587.37

Step by Step Solution

1. Step 1: Write the proportion equation
   78,396.66 : 108,188.15 = 42,587.37 : x
2. Step 2: Convert to fraction form
   78,396.66/108,188.15 = 42,587.37/x
3. Step 3: Cross multiply
   78,396.66x = 108,188.15 × 42,587.37
4. Step 4: Simplify right side
   78,396.66x = 4,607,448,560.73
5. Step 5: Solve for x
   x = 4,607,448,560.73/78,396.66
6. Step 6: Final answer
   x = 58,770.98