Finding the Fourth Proportional to 260,085.24, 390,142.98 and 73,111.32

Step by Step Solution

1. Step 1: Write the proportion equation
   260,085.24 : 390,142.98 = 73,111.32 : x
2. Step 2: Convert to fraction form
   260,085.24/390,142.98 = 73,111.32/x
3. Step 3: Cross multiply
   260,085.24x = 390,142.98 × 73,111.32
4. Step 4: Simplify right side
   260,085.24x = 28,523,868,256.53
5. Step 5: Solve for x
   x = 28,523,868,256.53/260,085.24
6. Step 6: Final answer
   x = 109,671.23