Finding the Fourth Proportional to 153,399.39, 211,748.94 and 89,757.69

Step by Step Solution

1. Step 1: Write the proportion equation
   153,399.39 : 211,748.94 = 89,757.69 : x
2. Step 2: Convert to fraction form
   153,399.39/211,748.94 = 89,757.69/x
3. Step 3: Cross multiply
   153,399.39x = 211,748.94 × 89,757.69
4. Step 4: Simplify right side
   153,399.39x = 19,006,095,714.35
5. Step 5: Solve for x
   x = 19,006,095,714.35/153,399.39
6. Step 6: Final answer
   x = 123,899.42