Finding the Fourth Proportional to 78,513.72, 108,306.84 and 54,598.86

Step by Step Solution

1. Step 1: Write the proportion equation
   78,513.72 : 108,306.84 = 54,598.86 : x
2. Step 2: Convert to fraction form
   78,513.72/108,306.84 = 54,598.86/x
3. Step 3: Cross multiply
   78,513.72x = 108,306.84 × 54,598.86
4. Step 4: Simplify right side
   78,513.72x = 5,913,429,994.20
5. Step 5: Solve for x
   x = 5,913,429,994.20/78,513.72
6. Step 6: Final answer
   x = 75,317.15