Finding the Fourth Proportional to 120,976.42, 181,330.17 and 91,298.02

Step by Step Solution

1. Step 1: Write the proportion equation
   120,976.42 : 181,330.17 = 91,298.02 : x
2. Step 2: Convert to fraction form
   120,976.42/181,330.17 = 91,298.02/x
3. Step 3: Cross multiply
   120,976.42x = 181,330.17 × 91,298.02
4. Step 4: Simplify right side
   120,976.42x = 16,555,085,487.26
5. Step 5: Solve for x
   x = 16,555,085,487.26/120,976.42
6. Step 6: Final answer
   x = 136,845.56