Finding the Fourth Proportional to 118,216.85, 163,139.02 and 64,501.84

Step by Step Solution

1. Step 1: Write the proportion equation
   118,216.85 : 163,139.02 = 64,501.84 : x
2. Step 2: Convert to fraction form
   118,216.85/163,139.02 = 64,501.84/x
3. Step 3: Cross multiply
   118,216.85x = 163,139.02 × 64,501.84
4. Step 4: Simplify right side
   118,216.85x = 10,522,766,396.69
5. Step 5: Solve for x
   x = 10,522,766,396.69/118,216.85
6. Step 6: Final answer
   x = 89,012.41