Finding the Fourth Proportional to 105,569.76, 145,686.29 and 57,824.82

Step by Step Solution

1. Step 1: Write the proportion equation
   105,569.76 : 145,686.29 = 57,824.82 : x
2. Step 2: Convert to fraction form
   105,569.76/145,686.29 = 57,824.82/x
3. Step 3: Cross multiply
   105,569.76x = 145,686.29 × 57,824.82
4. Step 4: Simplify right side
   105,569.76x = 8,424,283,495.72
5. Step 5: Solve for x
   x = 8,424,283,495.72/105,569.76
6. Step 6: Final answer
   x = 79,798.26