Finding the Fourth Proportional to 101,426.72, 151,959.65 and 86,484.04

Step by Step Solution

1. Step 1: Write the proportion equation
   101,426.72 : 151,959.65 = 86,484.04 : x
2. Step 2: Convert to fraction form
   101,426.72/151,959.65 = 86,484.04/x
3. Step 3: Cross multiply
   101,426.72x = 151,959.65 × 86,484.04
4. Step 4: Simplify right side
   101,426.72x = 13,142,084,530.83
5. Step 5: Solve for x
   x = 13,142,084,530.83/101,426.72
6. Step 6: Final answer
   x = 129,572.21