Finding the Fourth Proportional to 73,139.31, 109,643.28 and 26,381.25

Step by Step Solution

1. Step 1: Write the proportion equation
   73,139.31 : 109,643.28 = 26,381.25 : x
2. Step 2: Convert to fraction form
   73,139.31/109,643.28 = 26,381.25/x
3. Step 3: Cross multiply
   73,139.31x = 109,643.28 × 26,381.25
4. Step 4: Simplify right side
   73,139.31x = 2,892,526,780.50
5. Step 5: Solve for x
   x = 2,892,526,780.50/73,139.31
6. Step 6: Final answer
   x = 39,548.18