Finding the Fourth Proportional to 377,434.10, 566,151.15 and 128,116.10

Step by Step Solution

1. Step 1: Write the proportion equation
   377,434.10 : 566,151.15 = 128,116.10 : x
2. Step 2: Convert to fraction form
   377,434.10/566,151.15 = 128,116.10/x
3. Step 3: Cross multiply
   377,434.10x = 566,151.15 × 128,116.10
4. Step 4: Simplify right side
   377,434.10x = 72,533,077,348.52
5. Step 5: Solve for x
   x = 72,533,077,348.52/377,434.10
6. Step 6: Final answer
   x = 192,174.15