Finding the Fourth Proportional to 101,155.32, 139,594.32 and 56,443.32

Step by Step Solution

1. Step 1: Write the proportion equation
   101,155.32 : 139,594.32 = 56,443.32 : x
2. Step 2: Convert to fraction form
   101,155.32/139,594.32 = 56,443.32/x
3. Step 3: Cross multiply
   101,155.32x = 139,594.32 × 56,443.32
4. Step 4: Simplify right side
   101,155.32x = 7,879,166,873.94
5. Step 5: Solve for x
   x = 7,879,166,873.94/101,155.32
6. Step 6: Final answer
   x = 77,891.77