Finding the Fourth Proportional to 112,647.61, 155,443.15 and 67,316.57

Step by Step Solution

1. Step 1: Write the proportion equation
   112,647.61 : 155,443.15 = 67,316.57 : x
2. Step 2: Convert to fraction form
   112,647.61/155,443.15 = 67,316.57/x
3. Step 3: Cross multiply
   112,647.61x = 155,443.15 × 67,316.57
4. Step 4: Simplify right side
   112,647.61x = 10,463,899,577.84
5. Step 5: Solve for x
   x = 10,463,899,577.84/112,647.61
6. Step 6: Final answer
   x = 92,890.56