Finding the Fourth Proportional to 76,147.36, 105,077.52 and 42,608.80

Step by Step Solution

1. Step 1: Write the proportion equation
   76,147.36 : 105,077.52 = 42,608.80 : x
2. Step 2: Convert to fraction form
   76,147.36/105,077.52 = 42,608.80/x
3. Step 3: Cross multiply
   76,147.36x = 105,077.52 × 42,608.80
4. Step 4: Simplify right side
   76,147.36x = 4,477,227,034.18
5. Step 5: Solve for x
   x = 4,477,227,034.18/76,147.36
6. Step 6: Final answer
   x = 58,796.88