Finding the Fourth Proportional to 76,111.32, 105,033.72 and 42,121.24

Step by Step Solution

1. Step 1: Write the proportion equation
   76,111.32 : 105,033.72 = 42,121.24 : x
2. Step 2: Convert to fraction form
   76,111.32/105,033.72 = 42,121.24/x
3. Step 3: Cross multiply
   76,111.32x = 105,033.72 × 42,121.24
4. Step 4: Simplify right side
   76,111.32x = 4,424,150,528.21
5. Step 5: Solve for x
   x = 4,424,150,528.21/76,111.32
6. Step 6: Final answer
   x = 58,127.37