Finding the Fourth Proportional to 100,785.42, 139,083.91 and 55,463.41

Step by Step Solution

1. Step 1: Write the proportion equation
   100,785.42 : 139,083.91 = 55,463.41 : x
2. Step 2: Convert to fraction form
   100,785.42/139,083.91 = 55,463.41/x
3. Step 3: Cross multiply
   100,785.42x = 139,083.91 × 55,463.41
4. Step 4: Simplify right side
   100,785.42x = 7,714,067,329.22
5. Step 5: Solve for x
   x = 7,714,067,329.22/100,785.42
6. Step 6: Final answer
   x = 76,539.51