Finding the Fourth Proportional to 71,498.30, 107,248.15 and 21,578.81

Step by Step Solution

1. Step 1: Write the proportion equation
   71,498.30 : 107,248.15 = 21,578.81 : x
2. Step 2: Convert to fraction form
   71,498.30/107,248.15 = 21,578.81/x
3. Step 3: Cross multiply
   71,498.30x = 107,248.15 × 21,578.81
4. Step 4: Simplify right side
   71,498.30x = 2,314,286,942.43
5. Step 5: Solve for x
   x = 2,314,286,942.43/71,498.30
6. Step 6: Final answer
   x = 32,368.42