Finding the Fourth Proportional to 465,641.28, 642,760.52 and 272,111.83

Step by Step Solution

1. Step 1: Write the proportion equation
   465,641.28 : 642,760.52 = 272,111.83 : x
2. Step 2: Convert to fraction form
   465,641.28/642,760.52 = 272,111.83/x
3. Step 3: Cross multiply
   465,641.28x = 642,760.52 × 272,111.83
4. Step 4: Simplify right side
   465,641.28x = 174,902,738,381.49
5. Step 5: Solve for x
   x = 174,902,738,381.49/465,641.28
6. Step 6: Final answer
   x = 375,616.91