Finding the Fourth Proportional to 105,719.31, 158,613.53 and 39,164.31

Step by Step Solution

1. Step 1: Write the proportion equation
   105,719.31 : 158,613.53 = 39,164.31 : x
2. Step 2: Convert to fraction form
   105,719.31/158,613.53 = 39,164.31/x
3. Step 3: Cross multiply
   105,719.31x = 158,613.53 × 39,164.31
4. Step 4: Simplify right side
   105,719.31x = 6,211,989,263.29
5. Step 5: Solve for x
   x = 6,211,989,263.29/105,719.31
6. Step 6: Final answer
   x = 58,759.27