Finding the Fourth Proportional to 106,320.09, 159,480.50 and 72,938.98

Step by Step Solution

1. Step 1: Write the proportion equation
   106,320.09 : 159,480.50 = 72,938.98 : x
2. Step 2: Convert to fraction form
   106,320.09/159,480.50 = 72,938.98/x
3. Step 3: Cross multiply
   106,320.09x = 159,480.50 × 72,938.98
4. Step 4: Simplify right side
   106,320.09x = 11,632,344,834.55
5. Step 5: Solve for x
   x = 11,632,344,834.55/106,320.09
6. Step 6: Final answer
   x = 109,408.71