Finding the Fourth Proportional to 83,980.74, 115,841.34 and 49,966.20

Step by Step Solution

1. Step 1: Write the proportion equation
   83,980.74 : 115,841.34 = 49,966.20 : x
2. Step 2: Convert to fraction form
   83,980.74/115,841.34 = 49,966.20/x
3. Step 3: Cross multiply
   83,980.74x = 115,841.34 × 49,966.20
4. Step 4: Simplify right side
   83,980.74x = 5,788,151,562.71
5. Step 5: Solve for x
   x = 5,788,151,562.71/83,980.74
6. Step 6: Final answer
   x = 68,922.37