Finding the Fourth Proportional to 112,651.92, 155,443.32 and 72,369

Step by Step Solution

1. Step 1: Write the proportion equation
   112,651.92 : 155,443.32 = 72,369 : x
2. Step 2: Convert to fraction form
   112,651.92/155,443.32 = 72,369/x
3. Step 3: Cross multiply
   112,651.92x = 155,443.32 × 72,369
4. Step 4: Simplify right side
   112,651.92x = 11,249,277,625.08
5. Step 5: Solve for x
   x = 11,249,277,625.08/112,651.92
6. Step 6: Final answer
   x = 99,858.73