Finding the Fourth Proportional to 56,040.18, 84,061.98 and 20,973.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,040.18 : 84,061.98 = 20,973.12 : x
2. Step 2: Convert to fraction form
   56,040.18/84,061.98 = 20,973.12/x
3. Step 3: Cross multiply
   56,040.18x = 84,061.98 × 20,973.12
4. Step 4: Simplify right side
   56,040.18x = 1,763,041,993.98
5. Step 5: Solve for x
   x = 1,763,041,993.98/56,040.18
6. Step 6: Final answer
   x = 31,460.32