Finding the Fourth Proportional to 94,721, 142,109.34 and 28,161.64

Step by Step Solution

1. Step 1: Write the proportion equation
   94,721 : 142,109.34 = 28,161.64 : x
2. Step 2: Convert to fraction form
   94,721/142,109.34 = 28,161.64/x
3. Step 3: Cross multiply
   94,721x = 142,109.34 × 28,161.64
4. Step 4: Simplify right side
   94,721x = 4,002,032,073.72
5. Step 5: Solve for x
   x = 4,002,032,073.72/94,721
6. Step 6: Final answer
   x = 42,250.74