Finding the Fourth Proportional to 91,080.56, 136,621.18 and 27,900.43

Step by Step Solution

1. Step 1: Write the proportion equation
   91,080.56 : 136,621.18 = 27,900.43 : x
2. Step 2: Convert to fraction form
   91,080.56/136,621.18 = 27,900.43/x
3. Step 3: Cross multiply
   91,080.56x = 136,621.18 × 27,900.43
4. Step 4: Simplify right side
   91,080.56x = 3,811,789,669.11
5. Step 5: Solve for x
   x = 3,811,789,669.11/91,080.56
6. Step 6: Final answer
   x = 41,850.75