Finding the Fourth Proportional to 155,570.76, 214,714.46 and 90,150.42

Step by Step Solution

1. Step 1: Write the proportion equation
   155,570.76 : 214,714.46 = 90,150.42 : x
2. Step 2: Convert to fraction form
   155,570.76/214,714.46 = 90,150.42/x
3. Step 3: Cross multiply
   155,570.76x = 214,714.46 × 90,150.42
4. Step 4: Simplify right side
   155,570.76x = 19,356,598,749.07
5. Step 5: Solve for x
   x = 19,356,598,749.07/155,570.76
6. Step 6: Final answer
   x = 124,423.12