Finding the Fourth Proportional to 215,109.42, 322,453.52 and 120,385.86

Step by Step Solution

1. Step 1: Write the proportion equation
   215,109.42 : 322,453.52 = 120,385.86 : x
2. Step 2: Convert to fraction form
   215,109.42/322,453.52 = 120,385.86/x
3. Step 3: Cross multiply
   215,109.42x = 322,453.52 × 120,385.86
4. Step 4: Simplify right side
   215,109.42x = 38,818,844,315.23
5. Step 5: Solve for x
   x = 38,818,844,315.23/215,109.42
6. Step 6: Final answer
   x = 180,460.92