Finding the Fourth Proportional to 112,106.72, 154,716.72 and 61,816.16

Step by Step Solution

1. Step 1: Write the proportion equation
   112,106.72 : 154,716.72 = 61,816.16 : x
2. Step 2: Convert to fraction form
   112,106.72/154,716.72 = 61,816.16/x
3. Step 3: Cross multiply
   112,106.72x = 154,716.72 × 61,816.16
4. Step 4: Simplify right side
   112,106.72x = 9,563,993,518.20
5. Step 5: Solve for x
   x = 9,563,993,518.20/112,106.72
6. Step 6: Final answer
   x = 85,311.51