Finding the Fourth Proportional to 91,315.68, 136,984.50 and 35,142.72

Step by Step Solution

1. Step 1: Write the proportion equation
   91,315.68 : 136,984.50 = 35,142.72 : x
2. Step 2: Convert to fraction form
   91,315.68/136,984.50 = 35,142.72/x
3. Step 3: Cross multiply
   91,315.68x = 136,984.50 × 35,142.72
4. Step 4: Simplify right side
   91,315.68x = 4,814,007,927.84
5. Step 5: Solve for x
   x = 4,814,007,927.84/91,315.68
6. Step 6: Final answer
   x = 52,718.31