Finding the Fourth Proportional to 153,036.42, 211,189.32 and 85,052.31

Step by Step Solution

1. Step 1: Write the proportion equation
   153,036.42 : 211,189.32 = 85,052.31 : x
2. Step 2: Convert to fraction form
   153,036.42/211,189.32 = 85,052.31/x
3. Step 3: Cross multiply
   153,036.42x = 211,189.32 × 85,052.31
4. Step 4: Simplify right side
   153,036.42x = 17,962,139,513.33
5. Step 5: Solve for x
   x = 17,962,139,513.33/153,036.42
6. Step 6: Final answer
   x = 117,371.67