Finding the Fourth Proportional to 64,665.30, 96,426.87 and 56,800.00

Step by Step Solution

1. Step 1: Write the proportion equation
   64,665.30 : 96,426.87 = 56,800.00 : x
2. Step 2: Convert to fraction form
   64,665.30/96,426.87 = 56,800.00/x
3. Step 3: Cross multiply
   64,665.30x = 96,426.87 × 56,800.00
4. Step 4: Simplify right side
   64,665.30x = 5,477,045,974.93
5. Step 5: Solve for x
   x = 5,477,045,974.93/64,665.30
6. Step 6: Final answer
   x = 84,698.38