Finding the Fourth Proportional to 76,142, 105,076.32 and 42,608

Step by Step Solution

1. Step 1: Write the proportion equation
   76,142 : 105,076.32 = 42,608 : x
2. Step 2: Convert to fraction form
   76,142/105,076.32 = 42,608/x
3. Step 3: Cross multiply
   76,142x = 105,076.32 × 42,608
4. Step 4: Simplify right side
   76,142x = 4,477,091,842.56
5. Step 5: Solve for x
   x = 4,477,091,842.56/76,142
6. Step 6: Final answer
   x = 58,799.24