Finding the Fourth Proportional to 92,744.19, 139,100.15 and 42,820.04

Step by Step Solution

1. Step 1: Write the proportion equation
   92,744.19 : 139,100.15 = 42,820.04 : x
2. Step 2: Convert to fraction form
   92,744.19/139,100.15 = 42,820.04/x
3. Step 3: Cross multiply
   92,744.19x = 139,100.15 × 42,820.04
4. Step 4: Simplify right side
   92,744.19x = 5,956,274,441.81
5. Step 5: Solve for x
   x = 5,956,274,441.81/92,744.19
6. Step 6: Final answer
   x = 64,222.62