Finding the Fourth Proportional to 118,695.25, 163,799.41 and 64,980.10

Step by Step Solution

1. Step 1: Write the proportion equation
   118,695.25 : 163,799.41 = 64,980.10 : x
2. Step 2: Convert to fraction form
   118,695.25/163,799.41 = 64,980.10/x
3. Step 3: Cross multiply
   118,695.25x = 163,799.41 × 64,980.10
4. Step 4: Simplify right side
   118,695.25x = 10,643,702,041.74
5. Step 5: Solve for x
   x = 10,643,702,041.74/118,695.25
6. Step 6: Final answer
   x = 89,672.52