Finding the Fourth Proportional to 34,858.35, 48,089.70 and 21,425.31

Step by Step Solution

1. Step 1: Write the proportion equation
   34,858.35 : 48,089.70 = 21,425.31 : x
2. Step 2: Convert to fraction form
   34,858.35/48,089.70 = 21,425.31/x
3. Step 3: Cross multiply
   34,858.35x = 48,089.70 × 21,425.31
4. Step 4: Simplify right side
   34,858.35x = 1,030,336,730.31
5. Step 5: Solve for x
   x = 1,030,336,730.31/34,858.35
6. Step 6: Final answer
   x = 29,557.82