Finding the Fourth Proportional to 67,780.17, 93,514.23 and 40,912.47

Step by Step Solution

1. Step 1: Write the proportion equation
   67,780.17 : 93,514.23 = 40,912.47 : x
2. Step 2: Convert to fraction form
   67,780.17/93,514.23 = 40,912.47/x
3. Step 3: Cross multiply
   67,780.17x = 93,514.23 × 40,912.47
4. Step 4: Simplify right side
   67,780.17x = 3,825,898,129.45
5. Step 5: Solve for x
   x = 3,825,898,129.45/67,780.17
6. Step 6: Final answer
   x = 56,445.69