Finding the Fourth Proportional to 153,111.94, 211,294.51 and 89,450.19

Step by Step Solution

1. Step 1: Write the proportion equation
   153,111.94 : 211,294.51 = 89,450.19 : x
2. Step 2: Convert to fraction form
   153,111.94/211,294.51 = 89,450.19/x
3. Step 3: Cross multiply
   153,111.94x = 211,294.51 × 89,450.19
4. Step 4: Simplify right side
   153,111.94x = 18,900,333,841.83
5. Step 5: Solve for x
   x = 18,900,333,841.83/153,111.94
6. Step 6: Final answer
   x = 123,441.28