Finding the Fourth Proportional to 111,448.63, 153,796.42 and 61,719.56

Step by Step Solution

1. Step 1: Write the proportion equation
   111,448.63 : 153,796.42 = 61,719.56 : x
2. Step 2: Convert to fraction form
   111,448.63/153,796.42 = 61,719.56/x
3. Step 3: Cross multiply
   111,448.63x = 153,796.42 × 61,719.56
4. Step 4: Simplify right side
   111,448.63x = 9,492,247,371.98
5. Step 5: Solve for x
   x = 9,492,247,371.98/111,448.63
6. Step 6: Final answer
   x = 85,171.50