Finding the Fourth Proportional to 82,724.56, 124,039.76 and 56,461.12

Step by Step Solution

1. Step 1: Write the proportion equation
   82,724.56 : 124,039.76 = 56,461.12 : x
2. Step 2: Convert to fraction form
   82,724.56/124,039.76 = 56,461.12/x
3. Step 3: Cross multiply
   82,724.56x = 124,039.76 × 56,461.12
4. Step 4: Simplify right side
   82,724.56x = 7,003,423,774.13
5. Step 5: Solve for x
   x = 7,003,423,774.13/82,724.56
6. Step 6: Final answer
   x = 84,659.55