Finding the Fourth Proportional to 76,969.03, 106,216.23 and 42,978.08

Step by Step Solution

1. Step 1: Write the proportion equation
   76,969.03 : 106,216.23 = 42,978.08 : x
2. Step 2: Convert to fraction form
   76,969.03/106,216.23 = 42,978.08/x
3. Step 3: Cross multiply
   76,969.03x = 106,216.23 × 42,978.08
4. Step 4: Simplify right side
   76,969.03x = 4,564,969,630.24
5. Step 5: Solve for x
   x = 4,564,969,630.24/76,969.03
6. Step 6: Final answer
   x = 59,309.17