Finding the Fourth Proportional to 118,560.33, 163,612.86 and 64,112.10

Step by Step Solution

1. Step 1: Write the proportion equation
   118,560.33 : 163,612.86 = 64,112.10 : x
2. Step 2: Convert to fraction form
   118,560.33/163,612.86 = 64,112.10/x
3. Step 3: Cross multiply
   118,560.33x = 163,612.86 × 64,112.10
4. Step 4: Simplify right side
   118,560.33x = 10,489,564,041.61
5. Step 5: Solve for x
   x = 10,489,564,041.61/118,560.33
6. Step 6: Final answer
   x = 88,474.48