Finding the Fourth Proportional to 118,131.31, 163,025.14 and 64,419.27

Step by Step Solution

1. Step 1: Write the proportion equation
   118,131.31 : 163,025.14 = 64,419.27 : x
2. Step 2: Convert to fraction form
   118,131.31/163,025.14 = 64,419.27/x
3. Step 3: Cross multiply
   118,131.31x = 163,025.14 × 64,419.27
4. Step 4: Simplify right side
   118,131.31x = 10,501,960,510.45
5. Step 5: Solve for x
   x = 10,501,960,510.45/118,131.31
6. Step 6: Final answer
   x = 88,900.74