Finding the Fourth Proportional to 85,978.17, 128,925.72 and 36,044.87

Step by Step Solution

1. Step 1: Write the proportion equation
   85,978.17 : 128,925.72 = 36,044.87 : x
2. Step 2: Convert to fraction form
   85,978.17/128,925.72 = 36,044.87/x
3. Step 3: Cross multiply
   85,978.17x = 128,925.72 × 36,044.87
4. Step 4: Simplify right side
   85,978.17x = 4,647,110,172.43
5. Step 5: Solve for x
   x = 4,647,110,172.43/85,978.17
6. Step 6: Final answer
   x = 54,049.88