Finding the Fourth Proportional to 108,526.10, 162,789.15 and 91,030.10

Step by Step Solution

1. Step 1: Write the proportion equation
   108,526.10 : 162,789.15 = 91,030.10 : x
2. Step 2: Convert to fraction form
   108,526.10/162,789.15 = 91,030.10/x
3. Step 3: Cross multiply
   108,526.10x = 162,789.15 × 91,030.10
4. Step 4: Simplify right side
   108,526.10x = 14,818,712,603.42
5. Step 5: Solve for x
   x = 14,818,712,603.42/108,526.10
6. Step 6: Final answer
   x = 136,545.15