Finding the Fourth Proportional to 153,162.74, 211,369.83 and 89,499.17

Step by Step Solution

1. Step 1: Write the proportion equation
   153,162.74 : 211,369.83 = 89,499.17 : x
2. Step 2: Convert to fraction form
   153,162.74/211,369.83 = 89,499.17/x
3. Step 3: Cross multiply
   153,162.74x = 211,369.83 × 89,499.17
4. Step 4: Simplify right side
   153,162.74x = 18,917,424,348.04
5. Step 5: Solve for x
   x = 18,917,424,348.04/153,162.74
6. Step 6: Final answer
   x = 123,511.92