Finding the Fourth Proportional to 92,900.52, 128,221.38 and 55,167.48

Step by Step Solution

1. Step 1: Write the proportion equation
   92,900.52 : 128,221.38 = 55,167.48 : x
2. Step 2: Convert to fraction form
   92,900.52/128,221.38 = 55,167.48/x
3. Step 3: Cross multiply
   92,900.52x = 128,221.38 × 55,167.48
4. Step 4: Simplify right side
   92,900.52x = 7,073,650,416.72
5. Step 5: Solve for x
   x = 7,073,650,416.72/92,900.52
6. Step 6: Final answer
   x = 76,142.20