Finding the Fourth Proportional to 90,866.50, 136,300.98 and 28,537

Step by Step Solution

1. Step 1: Write the proportion equation
   90,866.50 : 136,300.98 = 28,537 : x
2. Step 2: Convert to fraction form
   90,866.50/136,300.98 = 28,537/x
3. Step 3: Cross multiply
   90,866.50x = 136,300.98 × 28,537
4. Step 4: Simplify right side
   90,866.50x = 3,889,621,066.26
5. Step 5: Solve for x
   x = 3,889,621,066.26/90,866.50
6. Step 6: Final answer
   x = 42,805.89