Finding the Fourth Proportional to 121,164.24, 181,776.72 and 42,279.12

Step by Step Solution

1. Step 1: Write the proportion equation
   121,164.24 : 181,776.72 = 42,279.12 : x
2. Step 2: Convert to fraction form
   121,164.24/181,776.72 = 42,279.12/x
3. Step 3: Cross multiply
   121,164.24x = 181,776.72 × 42,279.12
4. Step 4: Simplify right side
   121,164.24x = 7,685,359,758.09
5. Step 5: Solve for x
   x = 7,685,359,758.09/121,164.24
6. Step 6: Final answer
   x = 63,429.27