Finding the Fourth Proportional to 250,078.52, 345,101.60 and 142,646.30

Step by Step Solution

1. Step 1: Write the proportion equation
   250,078.52 : 345,101.60 = 142,646.30 : x
2. Step 2: Convert to fraction form
   250,078.52/345,101.60 = 142,646.30/x
3. Step 3: Cross multiply
   250,078.52x = 345,101.60 × 142,646.30
4. Step 4: Simplify right side
   250,078.52x = 49,227,463,925.34
5. Step 5: Solve for x
   x = 49,227,463,925.34/250,078.52
6. Step 6: Final answer
   x = 196,848.03