Finding the Fourth Proportional to 91,241.10, 136,874.67 and 28,066.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,241.10 : 136,874.67 = 28,066.50 : x
2. Step 2: Convert to fraction form
   91,241.10/136,874.67 = 28,066.50/x
3. Step 3: Cross multiply
   91,241.10x = 136,874.67 × 28,066.50
4. Step 4: Simplify right side
   91,241.10x = 3,841,592,925.56
5. Step 5: Solve for x
   x = 3,841,592,925.56/91,241.10
6. Step 6: Final answer
   x = 42,103.76