Finding the Fourth Proportional to 78,396.74, 108,188.27 and 42,587.04

Step by Step Solution

1. Step 1: Write the proportion equation
   78,396.74 : 108,188.27 = 42,587.04 : x
2. Step 2: Convert to fraction form
   78,396.74/108,188.27 = 42,587.04/x
3. Step 3: Cross multiply
   78,396.74x = 108,188.27 × 42,587.04
4. Step 4: Simplify right side
   78,396.74x = 4,607,418,182.02
5. Step 5: Solve for x
   x = 4,607,418,182.02/78,396.74
6. Step 6: Final answer
   x = 58,770.53