Finding the Fourth Proportional to 35,454, 48,926.16 and 21,123.72

Step by Step Solution

1. Step 1: Write the proportion equation
   35,454 : 48,926.16 = 21,123.72 : x
2. Step 2: Convert to fraction form
   35,454/48,926.16 = 21,123.72/x
3. Step 3: Cross multiply
   35,454x = 48,926.16 × 21,123.72
4. Step 4: Simplify right side
   35,454x = 1,033,502,504.52
5. Step 5: Solve for x
   x = 1,033,502,504.52/35,454
6. Step 6: Final answer
   x = 29,150.52