Finding the Fourth Proportional to 260,801.34, 391,155.76 and 118,613.31

Step by Step Solution

1. Step 1: Write the proportion equation
   260,801.34 : 391,155.76 = 118,613.31 : x
2. Step 2: Convert to fraction form
   260,801.34/391,155.76 = 118,613.31/x
3. Step 3: Cross multiply
   260,801.34x = 391,155.76 × 118,613.31
4. Step 4: Simplify right side
   260,801.34x = 46,396,279,419.17
5. Step 5: Solve for x
   x = 46,396,279,419.17/260,801.34
6. Step 6: Final answer
   x = 177,898.93