Finding the Fourth Proportional to 191,134.32, 286,667.96 and 72,812.76

Step by Step Solution

1. Step 1: Write the proportion equation
   191,134.32 : 286,667.96 = 72,812.76 : x
2. Step 2: Convert to fraction form
   191,134.32/286,667.96 = 72,812.76/x
3. Step 3: Cross multiply
   191,134.32x = 286,667.96 × 72,812.76
4. Step 4: Simplify right side
   191,134.32x = 20,873,085,007.11
5. Step 5: Solve for x
   x = 20,873,085,007.11/191,134.32
6. Step 6: Final answer
   x = 109,206.37