Finding the Fourth Proportional to 118,136.16, 163,031.27 and 64,422.18

Step by Step Solution

1. Step 1: Write the proportion equation
   118,136.16 : 163,031.27 = 64,422.18 : x
2. Step 2: Convert to fraction form
   118,136.16/163,031.27 = 64,422.18/x
3. Step 3: Cross multiply
   118,136.16x = 163,031.27 × 64,422.18
4. Step 4: Simplify right side
   118,136.16x = 10,502,829,499.46
5. Step 5: Solve for x
   x = 10,502,829,499.46/118,136.16
6. Step 6: Final answer
   x = 88,904.44