Finding the Fourth Proportional to 56,498.18, 84,714.02 and 21,440.30

Step by Step Solution

1. Step 1: Write the proportion equation
   56,498.18 : 84,714.02 = 21,440.30 : x
2. Step 2: Convert to fraction form
   56,498.18/84,714.02 = 21,440.30/x
3. Step 3: Cross multiply
   56,498.18x = 84,714.02 × 21,440.30
4. Step 4: Simplify right side
   56,498.18x = 1,816,294,003.01
5. Step 5: Solve for x
   x = 1,816,294,003.01/56,498.18
6. Step 6: Final answer
   x = 32,147.83