Finding the Fourth Proportional to 918,168.89, 1,267,042.72 and 504,707.06

Step by Step Solution

1. Step 1: Write the proportion equation
   918,168.89 : 1,267,042.72 = 504,707.06 : x
2. Step 2: Convert to fraction form
   918,168.89/1,267,042.72 = 504,707.06/x
3. Step 3: Cross multiply
   918,168.89x = 1,267,042.72 × 504,707.06
4. Step 4: Simplify right side
   918,168.89x = 639,485,407,795.13
5. Step 5: Solve for x
   x = 639,485,407,795.13/918,168.89
6. Step 6: Final answer
   x = 696,479.06