Finding the Fourth Proportional to 118,410.02, 163,403.92 and 64,693.88

Step by Step Solution

1. Step 1: Write the proportion equation
   118,410.02 : 163,403.92 = 64,693.88 : x
2. Step 2: Convert to fraction form
   118,410.02/163,403.92 = 64,693.88/x
3. Step 3: Cross multiply
   118,410.02x = 163,403.92 × 64,693.88
4. Step 4: Simplify right side
   118,410.02x = 10,571,233,838.78
5. Step 5: Solve for x
   x = 10,571,233,838.78/118,410.02
6. Step 6: Final answer
   x = 89,276.51