Finding the Fourth Proportional to 527,482.72, 791,217.89 and 128,123.86

Step by Step Solution

1. Step 1: Write the proportion equation
   527,482.72 : 791,217.89 = 128,123.86 : x
2. Step 2: Convert to fraction form
   527,482.72/791,217.89 = 128,123.86/x
3. Step 3: Cross multiply
   527,482.72x = 791,217.89 × 128,123.86
4. Step 4: Simplify right side
   527,482.72x = 101,373,885,571.15
5. Step 5: Solve for x
   x = 101,373,885,571.15/527,482.72
6. Step 6: Final answer
   x = 192,184.28