Finding the Fourth Proportional to 67,921.17, 93,821.00 and 56,627.61

Step by Step Solution

1. Step 1: Write the proportion equation
   67,921.17 : 93,821.00 = 56,627.61 : x
2. Step 2: Convert to fraction form
   67,921.17/93,821.00 = 56,627.61/x
3. Step 3: Cross multiply
   67,921.17x = 93,821.00 × 56,627.61
4. Step 4: Simplify right side
   67,921.17x = 5,312,858,714.67
5. Step 5: Solve for x
   x = 5,312,858,714.67/67,921.17
6. Step 6: Final answer
   x = 78,220.95