Finding the Fourth Proportional to 118,407.39, 163,404.56 and 64,695.73

Step by Step Solution

1. Step 1: Write the proportion equation
   118,407.39 : 163,404.56 = 64,695.73 : x
2. Step 2: Convert to fraction form
   118,407.39/163,404.56 = 64,695.73/x
3. Step 3: Cross multiply
   118,407.39x = 163,404.56 × 64,695.73
4. Step 4: Simplify right side
   118,407.39x = 10,571,577,294.53
5. Step 5: Solve for x
   x = 10,571,577,294.53/118,407.39
6. Step 6: Final answer
   x = 89,281.40