Finding the Fourth Proportional to 56,111.14, 84,144.83 and 21,031.66

Step by Step Solution

1. Step 1: Write the proportion equation
   56,111.14 : 84,144.83 = 21,031.66 : x
2. Step 2: Convert to fraction form
   56,111.14/84,144.83 = 21,031.66/x
3. Step 3: Cross multiply
   56,111.14x = 84,144.83 × 21,031.66
4. Step 4: Simplify right side
   56,111.14x = 1,769,705,034.59
5. Step 5: Solve for x
   x = 1,769,705,034.59/56,111.14
6. Step 6: Final answer
   x = 31,539.28