Finding the Fourth Proportional to 100,744.29, 139,038.32 and 55,426.01

Step by Step Solution

1. Step 1: Write the proportion equation
   100,744.29 : 139,038.32 = 55,426.01 : x
2. Step 2: Convert to fraction form
   100,744.29/139,038.32 = 55,426.01/x
3. Step 3: Cross multiply
   100,744.29x = 139,038.32 × 55,426.01
4. Step 4: Simplify right side
   100,744.29x = 7,706,339,314.70
5. Step 5: Solve for x
   x = 7,706,339,314.70/100,744.29
6. Step 6: Final answer
   x = 76,494.06