Finding the Fourth Proportional to 76,137, 105,069.06 and 42,609.48

Step by Step Solution

1. Step 1: Write the proportion equation
   76,137 : 105,069.06 = 42,609.48 : x
2. Step 2: Convert to fraction form
   76,137/105,069.06 = 42,609.48/x
3. Step 3: Cross multiply
   76,137x = 105,069.06 × 42,609.48
4. Step 4: Simplify right side
   76,137x = 4,476,938,010.69
5. Step 5: Solve for x
   x = 4,476,938,010.69/76,137
6. Step 6: Final answer
   x = 58,801.08