Finding the Fourth Proportional to 542,111.60, 813,105.86 and 142,783.62

Step by Step Solution

1. Step 1: Write the proportion equation
   542,111.60 : 813,105.86 = 142,783.62 : x
2. Step 2: Convert to fraction form
   542,111.60/813,105.86 = 142,783.62/x
3. Step 3: Cross multiply
   542,111.60x = 813,105.86 × 142,783.62
4. Step 4: Simplify right side
   542,111.60x = 116,098,198,134.01
5. Step 5: Solve for x
   x = 116,098,198,134.01/542,111.60
6. Step 6: Final answer
   x = 214,159.22