Finding the Fourth Proportional to 91,111.20, 136,569.60 and 34,929.60

Step by Step Solution

1. Step 1: Write the proportion equation
   91,111.20 : 136,569.60 = 34,929.60 : x
2. Step 2: Convert to fraction form
   91,111.20/136,569.60 = 34,929.60/x
3. Step 3: Cross multiply
   91,111.20x = 136,569.60 × 34,929.60
4. Step 4: Simplify right side
   91,111.20x = 4,770,321,500.16
5. Step 5: Solve for x
   x = 4,770,321,500.16/91,111.20
6. Step 6: Final answer
   x = 52,357.14