Finding the Fourth Proportional to 93,105.86, 128,488.98 and 52,821.32

Step by Step Solution

1. Step 1: Write the proportion equation
   93,105.86 : 128,488.98 = 52,821.32 : x
2. Step 2: Convert to fraction form
   93,105.86/128,488.98 = 52,821.32/x
3. Step 3: Cross multiply
   93,105.86x = 128,488.98 × 52,821.32
4. Step 4: Simplify right side
   93,105.86x = 6,786,957,084.69
5. Step 5: Solve for x
   x = 6,786,957,084.69/93,105.86
6. Step 6: Final answer
   x = 72,895.06