Finding the Fourth Proportional to 121,145.82, 181,719.72 and 42,259.92

Step by Step Solution

1. Step 1: Write the proportion equation
   121,145.82 : 181,719.72 = 42,259.92 : x
2. Step 2: Convert to fraction form
   121,145.82/181,719.72 = 42,259.92/x
3. Step 3: Cross multiply
   121,145.82x = 181,719.72 × 42,259.92
4. Step 4: Simplify right side
   121,145.82x = 7,679,460,829.62
5. Step 5: Solve for x
   x = 7,679,460,829.62/121,145.82
6. Step 6: Final answer
   x = 63,390.23