Finding the Fourth Proportional to 112,421.36, 155,150.31 and 64,025.33

Step by Step Solution

1. Step 1: Write the proportion equation
   112,421.36 : 155,150.31 = 64,025.33 : x
2. Step 2: Convert to fraction form
   112,421.36/155,150.31 = 64,025.33/x
3. Step 3: Cross multiply
   112,421.36x = 155,150.31 × 64,025.33
4. Step 4: Simplify right side
   112,421.36x = 9,933,549,843.51
5. Step 5: Solve for x
   x = 9,933,549,843.51/112,421.36
6. Step 6: Final answer
   x = 88,359.99