Finding the Fourth Proportional to 91,089.52, 136,638.37 and 27,905.03

Step by Step Solution

1. Step 1: Write the proportion equation
   91,089.52 : 136,638.37 = 27,905.03 : x
2. Step 2: Convert to fraction form
   91,089.52/136,638.37 = 27,905.03/x
3. Step 3: Cross multiply
   91,089.52x = 136,638.37 × 27,905.03
4. Step 4: Simplify right side
   91,089.52x = 3,812,897,814.00
5. Step 5: Solve for x
   x = 3,812,897,814.00/91,089.52
6. Step 6: Final answer
   x = 41,858.80