Finding the Fourth Proportional to 56,196.18, 84,306.83 and 21,136.14

Step by Step Solution

1. Step 1: Write the proportion equation
   56,196.18 : 84,306.83 = 21,136.14 : x
2. Step 2: Convert to fraction form
   56,196.18/84,306.83 = 21,136.14/x
3. Step 3: Cross multiply
   56,196.18x = 84,306.83 × 21,136.14
4. Step 4: Simplify right side
   56,196.18x = 1,781,920,856.16
5. Step 5: Solve for x
   x = 1,781,920,856.16/56,196.18
6. Step 6: Final answer
   x = 31,708.93