Finding the Fourth Proportional to 118,587.89, 163,654.35 and 64,875.17

Step by Step Solution

1. Step 1: Write the proportion equation
   118,587.89 : 163,654.35 = 64,875.17 : x
2. Step 2: Convert to fraction form
   118,587.89/163,654.35 = 64,875.17/x
3. Step 3: Cross multiply
   118,587.89x = 163,654.35 × 64,875.17
4. Step 4: Simplify right side
   118,587.89x = 10,617,103,777.49
5. Step 5: Solve for x
   x = 10,617,103,777.49/118,587.89
6. Step 6: Final answer
   x = 89,529.41