Finding the Fourth Proportional to 112,421.73, 155,150.83 and 64,025.72

Step by Step Solution

1. Step 1: Write the proportion equation
   112,421.73 : 155,150.83 = 64,025.72 : x
2. Step 2: Convert to fraction form
   112,421.73/155,150.83 = 64,025.72/x
3. Step 3: Cross multiply
   112,421.73x = 155,150.83 × 64,025.72
4. Step 4: Simplify right side
   112,421.73x = 9,933,642,823.59
5. Step 5: Solve for x
   x = 9,933,642,823.59/112,421.73
6. Step 6: Final answer
   x = 88,360.52