Finding the Fourth Proportional to 93,250.80, 128,635.56 and 55,517.76

Step by Step Solution

1. Step 1: Write the proportion equation
   93,250.80 : 128,635.56 = 55,517.76 : x
2. Step 2: Convert to fraction form
   93,250.80/128,635.56 = 55,517.76/x
3. Step 3: Cross multiply
   93,250.80x = 128,635.56 × 55,517.76
4. Step 4: Simplify right side
   93,250.80x = 7,141,558,147.55
5. Step 5: Solve for x
   x = 7,141,558,147.55/93,250.80
6. Step 6: Final answer
   x = 76,584.42