Finding the Fourth Proportional to 118,613.29, 163,670.18 and 70,856.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,613.29 : 163,670.18 = 70,856.50 : x
2. Step 2: Convert to fraction form
   118,613.29/163,670.18 = 70,856.50/x
3. Step 3: Cross multiply
   118,613.29x = 163,670.18 × 70,856.50
4. Step 4: Simplify right side
   118,613.29x = 11,597,096,109.17
5. Step 5: Solve for x
   x = 11,597,096,109.17/118,613.29
6. Step 6: Final answer
   x = 97,772.32