Finding the Fourth Proportional to 121,258.98, 181,941.39 and 42,429.78

Step by Step Solution

1. Step 1: Write the proportion equation
   121,258.98 : 181,941.39 = 42,429.78 : x
2. Step 2: Convert to fraction form
   121,258.98/181,941.39 = 42,429.78/x
3. Step 3: Cross multiply
   121,258.98x = 181,941.39 × 42,429.78
4. Step 4: Simplify right side
   121,258.98x = 7,719,733,150.59
5. Step 5: Solve for x
   x = 7,719,733,150.59/121,258.98
6. Step 6: Final answer
   x = 63,663.19