Finding the Fourth Proportional to 197,410.72, 272,372.88 and 112,496.80

Step by Step Solution

1. Step 1: Write the proportion equation
   197,410.72 : 272,372.88 = 112,496.80 : x
2. Step 2: Convert to fraction form
   197,410.72/272,372.88 = 112,496.80/x
3. Step 3: Cross multiply
   197,410.72x = 272,372.88 × 112,496.80
4. Step 4: Simplify right side
   197,410.72x = 30,641,077,406.78
5. Step 5: Solve for x
   x = 30,641,077,406.78/197,410.72
6. Step 6: Final answer
   x = 155,214.86