Finding the Fourth Proportional to 120,971.90, 181,530.81 and 42,141.48

Step by Step Solution

1. Step 1: Write the proportion equation
   120,971.90 : 181,530.81 = 42,141.48 : x
2. Step 2: Convert to fraction form
   120,971.90/181,530.81 = 42,141.48/x
3. Step 3: Cross multiply
   120,971.90x = 181,530.81 × 42,141.48
4. Step 4: Simplify right side
   120,971.90x = 7,649,976,999.00
5. Step 5: Solve for x
   x = 7,649,976,999.00/120,971.90
6. Step 6: Final answer
   x = 63,237.64