Finding the Fourth Proportional to 83,411.12, 124,802.78 and 58,499.80

Step by Step Solution

1. Step 1: Write the proportion equation
   83,411.12 : 124,802.78 = 58,499.80 : x
2. Step 2: Convert to fraction form
   83,411.12/124,802.78 = 58,499.80/x
3. Step 3: Cross multiply
   83,411.12x = 124,802.78 × 58,499.80
4. Step 4: Simplify right side
   83,411.12x = 7,300,937,669.44
5. Step 5: Solve for x
   x = 7,300,937,669.44/83,411.12
6. Step 6: Final answer
   x = 87,529.55