Finding the Fourth Proportional to 83,615.92, 115,382.26 and 49,618.50

Step by Step Solution

1. Step 1: Write the proportion equation
   83,615.92 : 115,382.26 = 49,618.50 : x
2. Step 2: Convert to fraction form
   83,615.92/115,382.26 = 49,618.50/x
3. Step 3: Cross multiply
   83,615.92x = 115,382.26 × 49,618.50
4. Step 4: Simplify right side
   83,615.92x = 5,725,094,667.81
5. Step 5: Solve for x
   x = 5,725,094,667.81/83,615.92
6. Step 6: Final answer
   x = 68,468.96