Finding the Fourth Proportional to 93,288.02, 128,635.83 and 63,020.78

Step by Step Solution

1. Step 1: Write the proportion equation
   93,288.02 : 128,635.83 = 63,020.78 : x
2. Step 2: Convert to fraction form
   93,288.02/128,635.83 = 63,020.78/x
3. Step 3: Cross multiply
   93,288.02x = 128,635.83 × 63,020.78
4. Step 4: Simplify right side
   93,288.02x = 8,106,730,342.55
5. Step 5: Solve for x
   x = 8,106,730,342.55/93,288.02
6. Step 6: Final answer
   x = 86,900.02