Finding the Fourth Proportional to 250,155.81, 345,227.27 and 142,746.77

Step by Step Solution

1. Step 1: Write the proportion equation
   250,155.81 : 345,227.27 = 142,746.77 : x
2. Step 2: Convert to fraction form
   250,155.81/345,227.27 = 142,746.77/x
3. Step 3: Cross multiply
   250,155.81x = 345,227.27 × 142,746.77
4. Step 4: Simplify right side
   250,155.81x = 49,280,077,857.75
5. Step 5: Solve for x
   x = 49,280,077,857.75/250,155.81
6. Step 6: Final answer
   x = 196,997.53