Finding the Fourth Proportional to 105,309.74, 157,915.46 and 35,139.98

Step by Step Solution

1. Step 1: Write the proportion equation
   105,309.74 : 157,915.46 = 35,139.98 : x
2. Step 2: Convert to fraction form
   105,309.74/157,915.46 = 35,139.98/x
3. Step 3: Cross multiply
   105,309.74x = 157,915.46 × 35,139.98
4. Step 4: Simplify right side
   105,309.74x = 5,549,146,106.09
5. Step 5: Solve for x
   x = 5,549,146,106.09/105,309.74
6. Step 6: Final answer
   x = 52,693.57