Finding the Fourth Proportional to 91,012.56, 136,532.52 and 28,682.16

Step by Step Solution

1. Step 1: Write the proportion equation
   91,012.56 : 136,532.52 = 28,682.16 : x
2. Step 2: Convert to fraction form
   91,012.56/136,532.52 = 28,682.16/x
3. Step 3: Cross multiply
   91,012.56x = 136,532.52 × 28,682.16
4. Step 4: Simplify right side
   91,012.56x = 3,916,047,583.84
5. Step 5: Solve for x
   x = 3,916,047,583.84/91,012.56
6. Step 6: Final answer
   x = 43,027.55