Finding the Fourth Proportional to 109,944.16, 151,781.76 and 86,020

Step by Step Solution

1. Step 1: Write the proportion equation
   109,944.16 : 151,781.76 = 86,020 : x
2. Step 2: Convert to fraction form
   109,944.16/151,781.76 = 86,020/x
3. Step 3: Cross multiply
   109,944.16x = 151,781.76 × 86,020
4. Step 4: Simplify right side
   109,944.16x = 13,056,266,995.20
5. Step 5: Solve for x
   x = 13,056,266,995.20/109,944.16
6. Step 6: Final answer
   x = 118,753.62