Finding the Fourth Proportional to 83,890.82, 115,762.38 and 49,430.18

Step by Step Solution

1. Step 1: Write the proportion equation
   83,890.82 : 115,762.38 = 49,430.18 : x
2. Step 2: Convert to fraction form
   83,890.82/115,762.38 = 49,430.18/x
3. Step 3: Cross multiply
   83,890.82x = 115,762.38 × 49,430.18
4. Step 4: Simplify right side
   83,890.82x = 5,722,155,280.63
5. Step 5: Solve for x
   x = 5,722,155,280.63/83,890.82
6. Step 6: Final answer
   x = 68,209.55