Finding the Fourth Proportional to 279,111.26, 418,665.98 and 76,707.65

Step by Step Solution

1. Step 1: Write the proportion equation
   279,111.26 : 418,665.98 = 76,707.65 : x
2. Step 2: Convert to fraction form
   279,111.26/418,665.98 = 76,707.65/x
3. Step 3: Cross multiply
   279,111.26x = 418,665.98 × 76,707.65
4. Step 4: Simplify right side
   279,111.26x = 32,114,884,699.18
5. Step 5: Solve for x
   x = 32,114,884,699.18/279,111.26
6. Step 6: Final answer
   x = 115,061.23