Finding the Fourth Proportional to 56,111.81, 84,153.31 and 16,659.77

Step by Step Solution

1. Step 1: Write the proportion equation
   56,111.81 : 84,153.31 = 16,659.77 : x
2. Step 2: Convert to fraction form
   56,111.81/84,153.31 = 16,659.77/x
3. Step 3: Cross multiply
   56,111.81x = 84,153.31 × 16,659.77
4. Step 4: Simplify right side
   56,111.81x = 1,401,974,326.92
5. Step 5: Solve for x
   x = 1,401,974,326.92/56,111.81
6. Step 6: Final answer
   x = 24,985.37