Finding the Fourth Proportional to 93,166.50, 128,526.78 and 54,899.91

Step by Step Solution

1. Step 1: Write the proportion equation
   93,166.50 : 128,526.78 = 54,899.91 : x
2. Step 2: Convert to fraction form
   93,166.50/128,526.78 = 54,899.91/x
3. Step 3: Cross multiply
   93,166.50x = 128,526.78 × 54,899.91
4. Step 4: Simplify right side
   93,166.50x = 7,056,108,860.46
5. Step 5: Solve for x
   x = 7,056,108,860.46/93,166.50
6. Step 6: Final answer
   x = 75,736.54