Finding the Fourth Proportional to 112,547.16, 155,241.72 and 72,197

Step by Step Solution

1. Step 1: Write the proportion equation
   112,547.16 : 155,241.72 = 72,197 : x
2. Step 2: Convert to fraction form
   112,547.16/155,241.72 = 72,197/x
3. Step 3: Cross multiply
   112,547.16x = 155,241.72 × 72,197
4. Step 4: Simplify right side
   112,547.16x = 11,207,986,458.84
5. Step 5: Solve for x
   x = 11,207,986,458.84/112,547.16
6. Step 6: Final answer
   x = 99,584.80