Finding the Fourth Proportional to 45,856.99, 68,726.27 and 20,538.01

Step by Step Solution

1. Step 1: Write the proportion equation
   45,856.99 : 68,726.27 = 20,538.01 : x
2. Step 2: Convert to fraction form
   45,856.99/68,726.27 = 20,538.01/x
3. Step 3: Cross multiply
   45,856.99x = 68,726.27 × 20,538.01
4. Step 4: Simplify right side
   45,856.99x = 1,411,500,476.89
5. Step 5: Solve for x
   x = 1,411,500,476.89/45,856.99
6. Step 6: Final answer
   x = 30,780.49