Finding the Fourth Proportional to 277,631.83, 383,139.78 and 156,791.29

Step by Step Solution

1. Step 1: Write the proportion equation
   277,631.83 : 383,139.78 = 156,791.29 : x
2. Step 2: Convert to fraction form
   277,631.83/383,139.78 = 156,791.29/x
3. Step 3: Cross multiply
   277,631.83x = 383,139.78 × 156,791.29
4. Step 4: Simplify right side
   277,631.83x = 60,072,980,356.52
5. Step 5: Solve for x
   x = 60,072,980,356.52/277,631.83
6. Step 6: Final answer
   x = 216,376.42