Finding the Fourth Proportional to 136,341.30, 204,311.48 and 98,980.05

Step by Step Solution

1. Step 1: Write the proportion equation
   136,341.30 : 204,311.48 = 98,980.05 : x
2. Step 2: Convert to fraction form
   136,341.30/204,311.48 = 98,980.05/x
3. Step 3: Cross multiply
   136,341.30x = 204,311.48 × 98,980.05
4. Step 4: Simplify right side
   136,341.30x = 20,222,760,011.07
5. Step 5: Solve for x
   x = 20,222,760,011.07/136,341.30
6. Step 6: Final answer
   x = 148,324.54