Finding the Fourth Proportional to 56,085.60, 84,128.43 and 16,642.37

Step by Step Solution

1. Step 1: Write the proportion equation
   56,085.60 : 84,128.43 = 16,642.37 : x
2. Step 2: Convert to fraction form
   56,085.60/84,128.43 = 16,642.37/x
3. Step 3: Cross multiply
   56,085.60x = 84,128.43 × 16,642.37
4. Step 4: Simplify right side
   56,085.60x = 1,400,096,038.94
5. Step 5: Solve for x
   x = 1,400,096,038.94/56,085.60
6. Step 6: Final answer
   x = 24,963.56