Finding the Fourth Proportional to 83,976.50, 115,864.61 and 58,454.21

Step by Step Solution

1. Step 1: Write the proportion equation
   83,976.50 : 115,864.61 = 58,454.21 : x
2. Step 2: Convert to fraction form
   83,976.50/115,864.61 = 58,454.21/x
3. Step 3: Cross multiply
   83,976.50x = 115,864.61 × 58,454.21
4. Step 4: Simplify right side
   83,976.50x = 6,772,773,372.91
5. Step 5: Solve for x
   x = 6,772,773,372.91/83,976.50
6. Step 6: Final answer
   x = 80,650.82