Finding the Fourth Proportional to 83,780.96, 115,617.15 and 45,539.55

Step by Step Solution

1. Step 1: Write the proportion equation
   83,780.96 : 115,617.15 = 45,539.55 : x
2. Step 2: Convert to fraction form
   83,780.96/115,617.15 = 45,539.55/x
3. Step 3: Cross multiply
   83,780.96x = 115,617.15 × 45,539.55
4. Step 4: Simplify right side
   83,780.96x = 5,265,152,983.28
5. Step 5: Solve for x
   x = 5,265,152,983.28/83,780.96
6. Step 6: Final answer
   x = 62,844.27