Finding the Fourth Proportional to 76,411.96, 114,581.79 and 28,364.78

Step by Step Solution

1. Step 1: Write the proportion equation
   76,411.96 : 114,581.79 = 28,364.78 : x
2. Step 2: Convert to fraction form
   76,411.96/114,581.79 = 28,364.78/x
3. Step 3: Cross multiply
   76,411.96x = 114,581.79 × 28,364.78
4. Step 4: Simplify right side
   76,411.96x = 3,250,087,551.81
5. Step 5: Solve for x
   x = 3,250,087,551.81/76,411.96
6. Step 6: Final answer
   x = 42,533.76