Finding the Fourth Proportional to 149,478.72, 206,279.28 and 82,410.72

Step by Step Solution

1. Step 1: Write the proportion equation
   149,478.72 : 206,279.28 = 82,410.72 : x
2. Step 2: Convert to fraction form
   149,478.72/206,279.28 = 82,410.72/x
3. Step 3: Cross multiply
   149,478.72x = 206,279.28 × 82,410.72
4. Step 4: Simplify right side
   149,478.72x = 16,999,623,985.88
5. Step 5: Solve for x
   x = 16,999,623,985.88/149,478.72
6. Step 6: Final answer
   x = 113,726.05