Finding the Fourth Proportional to 82,250.56, 123,376.56 and 19,921.12

Step by Step Solution

1. Step 1: Write the proportion equation
   82,250.56 : 123,376.56 = 19,921.12 : x
2. Step 2: Convert to fraction form
   82,250.56/123,376.56 = 19,921.12/x
3. Step 3: Cross multiply
   82,250.56x = 123,376.56 × 19,921.12
4. Step 4: Simplify right side
   82,250.56x = 2,457,799,256.95
5. Step 5: Solve for x
   x = 2,457,799,256.95/82,250.56
6. Step 6: Final answer
   x = 29,881.85