Finding the Fourth Proportional to 111,809.79, 154,298.79 and 64,062.18

Step by Step Solution

1. Step 1: Write the proportion equation
   111,809.79 : 154,298.79 = 64,062.18 : x
2. Step 2: Convert to fraction form
   111,809.79/154,298.79 = 64,062.18/x
3. Step 3: Cross multiply
   111,809.79x = 154,298.79 × 64,062.18
4. Step 4: Simplify right side
   111,809.79x = 9,884,716,858.76
5. Step 5: Solve for x
   x = 9,884,716,858.76/111,809.79
6. Step 6: Final answer
   x = 88,406.54