Finding the Fourth Proportional to 79,002.78, 108,958.88 and 56,334.53

Step by Step Solution

1. Step 1: Write the proportion equation
   79,002.78 : 108,958.88 = 56,334.53 : x
2. Step 2: Convert to fraction form
   79,002.78/108,958.88 = 56,334.53/x
3. Step 3: Cross multiply
   79,002.78x = 108,958.88 × 56,334.53
4. Step 4: Simplify right side
   79,002.78x = 6,138,146,890.17
5. Step 5: Solve for x
   x = 6,138,146,890.17/79,002.78
6. Step 6: Final answer
   x = 77,695.33