Finding the Fourth Proportional to 215,158.41, 296,918.61 and 118,363.61

Step by Step Solution

1. Step 1: Write the proportion equation
   215,158.41 : 296,918.61 = 118,363.61 : x
2. Step 2: Convert to fraction form
   215,158.41/296,918.61 = 118,363.61/x
3. Step 3: Cross multiply
   215,158.41x = 296,918.61 × 118,363.61
4. Step 4: Simplify right side
   215,158.41x = 35,144,358,555.78
5. Step 5: Solve for x
   x = 35,144,358,555.78/215,158.41
6. Step 6: Final answer
   x = 163,341.78