Finding the Fourth Proportional to 93,168.50, 128,529.54 and 54,901.91

Step by Step Solution

1. Step 1: Write the proportion equation
   93,168.50 : 128,529.54 = 54,901.91 : x
2. Step 2: Convert to fraction form
   93,168.50/128,529.54 = 54,901.91/x
3. Step 3: Cross multiply
   93,168.50x = 128,529.54 × 54,901.91
4. Step 4: Simplify right side
   93,168.50x = 7,056,517,237.42
5. Step 5: Solve for x
   x = 7,056,517,237.42/93,168.50
6. Step 6: Final answer
   x = 75,739.30