Finding the Fourth Proportional to 250,071.48, 345,094.56 and 142,641.18

Step by Step Solution

1. Step 1: Write the proportion equation
   250,071.48 : 345,094.56 = 142,641.18 : x
2. Step 2: Convert to fraction form
   250,071.48/345,094.56 = 142,641.18/x
3. Step 3: Cross multiply
   250,071.48x = 345,094.56 × 142,641.18
4. Step 4: Simplify right side
   250,071.48x = 49,224,695,249.98
5. Step 5: Solve for x
   x = 49,224,695,249.98/250,071.48
6. Step 6: Final answer
   x = 196,842.50