Finding the Fourth Proportional to 76,136.54, 105,069.34 and 42,148.16

Step by Step Solution

1. Step 1: Write the proportion equation
   76,136.54 : 105,069.34 = 42,148.16 : x
2. Step 2: Convert to fraction form
   76,136.54/105,069.34 = 42,148.16/x
3. Step 3: Cross multiply
   76,136.54x = 105,069.34 × 42,148.16
4. Step 4: Simplify right side
   76,136.54x = 4,428,479,274.76
5. Step 5: Solve for x
   x = 4,428,479,274.76/76,136.54
6. Step 6: Final answer
   x = 58,164.97