Finding the Fourth Proportional to 100,889.98, 139,238.00 and 75,352.01

Step by Step Solution

1. Step 1: Write the proportion equation
   100,889.98 : 139,238.00 = 75,352.01 : x
2. Step 2: Convert to fraction form
   100,889.98/139,238.00 = 75,352.01/x
3. Step 3: Cross multiply
   100,889.98x = 139,238.00 × 75,352.01
4. Step 4: Simplify right side
   100,889.98x = 10,491,862,801.86
5. Step 5: Solve for x
   x = 10,491,862,801.86/100,889.98
6. Step 6: Final answer
   x = 103,993.11