Finding the Fourth Proportional to 157,085.40, 219,453 and 157,085.40

Step by Step Solution

1. Step 1: Write the proportion equation
   157,085.40 : 219,453 = 157,085.40 : x
2. Step 2: Convert to fraction form
   157,085.40/219,453 = 157,085.40/x
3. Step 3: Cross multiply
   157,085.40x = 219,453 × 157,085.40
4. Step 4: Simplify right side
   157,085.40x = 34,472,862,286.20
5. Step 5: Solve for x
   x = 34,472,862,286.20/157,085.40
6. Step 6: Final answer
   x = 219,453