Finding the Fourth Proportional to 76,133.25, 105,061.25 and 42,143.22

Step by Step Solution

1. Step 1: Write the proportion equation
   76,133.25 : 105,061.25 = 42,143.22 : x
2. Step 2: Convert to fraction form
   76,133.25/105,061.25 = 42,143.22/x
3. Step 3: Cross multiply
   76,133.25x = 105,061.25 × 42,143.22
4. Step 4: Simplify right side
   76,133.25x = 4,427,619,477.58
5. Step 5: Solve for x
   x = 4,427,619,477.58/76,133.25
6. Step 6: Final answer
   x = 58,156.19