Finding the Fourth Proportional to 56,106.72, 84,156.78 and 21,043.44

Step by Step Solution

1. Step 1: Write the proportion equation
   56,106.72 : 84,156.78 = 21,043.44 : x
2. Step 2: Convert to fraction form
   56,106.72/84,156.78 = 21,043.44/x
3. Step 3: Cross multiply
   56,106.72x = 84,156.78 × 21,043.44
4. Step 4: Simplify right side
   56,106.72x = 1,770,948,150.52
5. Step 5: Solve for x
   x = 1,770,948,150.52/56,106.72
6. Step 6: Final answer
   x = 31,563.92