Finding the Fourth Proportional to 118,180.16, 163,090.90 and 64,467.15

Step by Step Solution

1. Step 1: Write the proportion equation
   118,180.16 : 163,090.90 = 64,467.15 : x
2. Step 2: Convert to fraction form
   118,180.16/163,090.90 = 64,467.15/x
3. Step 3: Cross multiply
   118,180.16x = 163,090.90 × 64,467.15
4. Step 4: Simplify right side
   118,180.16x = 10,514,005,513.94
5. Step 5: Solve for x
   x = 10,514,005,513.94/118,180.16
6. Step 6: Final answer
   x = 88,965.91