Finding the Fourth Proportional to 91,300.41, 136,727.04 and 75,408.21

Step by Step Solution

1. Step 1: Write the proportion equation
   91,300.41 : 136,727.04 = 75,408.21 : x
2. Step 2: Convert to fraction form
   91,300.41/136,727.04 = 75,408.21/x
3. Step 3: Cross multiply
   91,300.41x = 136,727.04 × 75,408.21
4. Step 4: Simplify right side
   91,300.41x = 10,310,341,345.00
5. Step 5: Solve for x
   x = 10,310,341,345.00/91,300.41
6. Step 6: Final answer
   x = 112,927.66