Finding the Fourth Proportional to 111,820.23, 154,231.29 and 64,056.15

Step by Step Solution

1. Step 1: Write the proportion equation
   111,820.23 : 154,231.29 = 64,056.15 : x
2. Step 2: Convert to fraction form
   111,820.23/154,231.29 = 64,056.15/x
3. Step 3: Cross multiply
   111,820.23x = 154,231.29 × 64,056.15
4. Step 4: Simplify right side
   111,820.23x = 9,879,462,646.93
5. Step 5: Solve for x
   x = 9,879,462,646.93/111,820.23
6. Step 6: Final answer
   x = 88,351.30