Finding the Fourth Proportional to 118,317.31, 163,281.76 and 64,606.41

Step by Step Solution

1. Step 1: Write the proportion equation
   118,317.31 : 163,281.76 = 64,606.41 : x
2. Step 2: Convert to fraction form
   118,317.31/163,281.76 = 64,606.41/x
3. Step 3: Cross multiply
   118,317.31x = 163,281.76 × 64,606.41
4. Step 4: Simplify right side
   118,317.31x = 10,549,048,170.57
5. Step 5: Solve for x
   x = 10,549,048,170.57/118,317.31
6. Step 6: Final answer
   x = 89,158.96