Finding the Fourth Proportional to 91,179, 136,792.80 and 28,849.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,179 : 136,792.80 = 28,849.50 : x
2. Step 2: Convert to fraction form
   91,179/136,792.80 = 28,849.50/x
3. Step 3: Cross multiply
   91,179x = 136,792.80 × 28,849.50
4. Step 4: Simplify right side
   91,179x = 3,946,403,883.60
5. Step 5: Solve for x
   x = 3,946,403,883.60/91,179
6. Step 6: Final answer
   x = 43,281.94