Finding the Fourth Proportional to 55,152.61, 75,614.85 and 54,156.15

Step by Step Solution

1. Step 1: Write the proportion equation
   55,152.61 : 75,614.85 = 54,156.15 : x
2. Step 2: Convert to fraction form
   55,152.61/75,614.85 = 54,156.15/x
3. Step 3: Cross multiply
   55,152.61x = 75,614.85 × 54,156.15
4. Step 4: Simplify right side
   55,152.61x = 4,095,009,158.83
5. Step 5: Solve for x
   x = 4,095,009,158.83/55,152.61
6. Step 6: Final answer
   x = 74,248.70