Finding the Fourth Proportional to 118,458.56, 163,461.57 and 64,740.17

Step by Step Solution

1. Step 1: Write the proportion equation
   118,458.56 : 163,461.57 = 64,740.17 : x
2. Step 2: Convert to fraction form
   118,458.56/163,461.57 = 64,740.17/x
3. Step 3: Cross multiply
   118,458.56x = 163,461.57 × 64,740.17
4. Step 4: Simplify right side
   118,458.56x = 10,582,529,830.27
5. Step 5: Solve for x
   x = 10,582,529,830.27/118,458.56
6. Step 6: Final answer
   x = 89,335.29