Finding the Fourth Proportional to 111,301.56, 153,588.42 and 65,977.20

Step by Step Solution

1. Step 1: Write the proportion equation
   111,301.56 : 153,588.42 = 65,977.20 : x
2. Step 2: Convert to fraction form
   111,301.56/153,588.42 = 65,977.20/x
3. Step 3: Cross multiply
   111,301.56x = 153,588.42 × 65,977.20
4. Step 4: Simplify right side
   111,301.56x = 10,133,333,904.02
5. Step 5: Solve for x
   x = 10,133,333,904.02/111,301.56
6. Step 6: Final answer
   x = 91,043.95