Finding the Fourth Proportional to 118,407.36, 163,404.51 and 64,695.71

Step by Step Solution

1. Step 1: Write the proportion equation
   118,407.36 : 163,404.51 = 64,695.71 : x
2. Step 2: Convert to fraction form
   118,407.36/163,404.51 = 64,695.71/x
3. Step 3: Cross multiply
   118,407.36x = 163,404.51 × 64,695.71
4. Step 4: Simplify right side
   118,407.36x = 10,571,569,651.15
5. Step 5: Solve for x
   x = 10,571,569,651.15/118,407.36
6. Step 6: Final answer
   x = 89,281.36