Finding the Fourth Proportional to 153,632.72, 211,892.97 and 99,934.89

Step by Step Solution

1. Step 1: Write the proportion equation
   153,632.72 : 211,892.97 = 99,934.89 : x
2. Step 2: Convert to fraction form
   153,632.72/211,892.97 = 99,934.89/x
3. Step 3: Cross multiply
   153,632.72x = 211,892.97 × 99,934.89
4. Step 4: Simplify right side
   153,632.72x = 21,175,500,648.72
5. Step 5: Solve for x
   x = 21,175,500,648.72/153,632.72
6. Step 6: Final answer
   x = 137,831.97