Finding the Fourth Proportional to 118,467.20, 163,484.42 and 64,752.59

Step by Step Solution

1. Step 1: Write the proportion equation
   118,467.20 : 163,484.42 = 64,752.59 : x
2. Step 2: Convert to fraction form
   118,467.20/163,484.42 = 64,752.59/x
3. Step 3: Cross multiply
   118,467.20x = 163,484.42 × 64,752.59
4. Step 4: Simplify right side
   118,467.20x = 10,586,038,478.46
5. Step 5: Solve for x
   x = 10,586,038,478.46/118,467.20
6. Step 6: Final answer
   x = 89,358.40