Finding the Fourth Proportional to 312,111.18, 430,714.91 and 176,150.86

Step by Step Solution

1. Step 1: Write the proportion equation
   312,111.18 : 430,714.91 = 176,150.86 : x
2. Step 2: Convert to fraction form
   312,111.18/430,714.91 = 176,150.86/x
3. Step 3: Cross multiply
   312,111.18x = 430,714.91 × 176,150.86
4. Step 4: Simplify right side
   312,111.18x = 75,870,801,811.32
5. Step 5: Solve for x
   x = 75,870,801,811.32/312,111.18
6. Step 6: Final answer
   x = 243,089.02