Finding the Fourth Proportional to 118,153.31, 163,055.52 and 64,441.26

Step by Step Solution

1. Step 1: Write the proportion equation
   118,153.31 : 163,055.52 = 64,441.26 : x
2. Step 2: Convert to fraction form
   118,153.31/163,055.52 = 64,441.26/x
3. Step 3: Cross multiply
   118,153.31x = 163,055.52 × 64,441.26
4. Step 4: Simplify right side
   118,153.31x = 10,507,503,158.76
5. Step 5: Solve for x
   x = 10,507,503,158.76/118,153.31
6. Step 6: Final answer
   x = 88,931.10