Finding the Fourth Proportional to 171,112.72, 236,164.72 and 99,534.24

Step by Step Solution

1. Step 1: Write the proportion equation
   171,112.72 : 236,164.72 = 99,534.24 : x
2. Step 2: Convert to fraction form
   171,112.72/236,164.72 = 99,534.24/x
3. Step 3: Cross multiply
   171,112.72x = 236,164.72 × 99,534.24
4. Step 4: Simplify right side
   171,112.72x = 23,506,475,920.01
5. Step 5: Solve for x
   x = 23,506,475,920.01/171,112.72
6. Step 6: Final answer
   x = 137,374.22