Finding the Fourth Proportional to 153,048.72, 211,197 and 85,061.28

Step by Step Solution

1. Step 1: Write the proportion equation
   153,048.72 : 211,197 = 85,061.28 : x
2. Step 2: Convert to fraction form
   153,048.72/211,197 = 85,061.28/x
3. Step 3: Cross multiply
   153,048.72x = 211,197 × 85,061.28
4. Step 4: Simplify right side
   153,048.72x = 17,964,687,152.16
5. Step 5: Solve for x
   x = 17,964,687,152.16/153,048.72
6. Step 6: Final answer
   x = 117,378.88