Finding the Fourth Proportional to 745,085.16, 1,116,953.76 and 271,659.72

Step by Step Solution

1. Step 1: Write the proportion equation
   745,085.16 : 1,116,953.76 = 271,659.72 : x
2. Step 2: Convert to fraction form
   745,085.16/1,116,953.76 = 271,659.72/x
3. Step 3: Cross multiply
   745,085.16x = 1,116,953.76 × 271,659.72
4. Step 4: Simplify right side
   745,085.16x = 303,431,345,694.55
5. Step 5: Solve for x
   x = 303,431,345,694.55/745,085.16
6. Step 6: Final answer
   x = 407,243.85