Finding the Fourth Proportional to 91,255.34, 136,872.22 and 28,075.34

Step by Step Solution

1. Step 1: Write the proportion equation
   91,255.34 : 136,872.22 = 28,075.34 : x
2. Step 2: Convert to fraction form
   91,255.34/136,872.22 = 28,075.34/x
3. Step 3: Cross multiply
   91,255.34x = 136,872.22 × 28,075.34
4. Step 4: Simplify right side
   91,255.34x = 3,842,733,428.69
5. Step 5: Solve for x
   x = 3,842,733,428.69/91,255.34
6. Step 6: Final answer
   x = 42,109.69