Finding the Fourth Proportional to 76,436.52, 105,483.50 and 42,447.12

Step by Step Solution

1. Step 1: Write the proportion equation
   76,436.52 : 105,483.50 = 42,447.12 : x
2. Step 2: Convert to fraction form
   76,436.52/105,483.50 = 42,447.12/x
3. Step 3: Cross multiply
   76,436.52x = 105,483.50 × 42,447.12
4. Step 4: Simplify right side
   76,436.52x = 4,477,470,042.87
5. Step 5: Solve for x
   x = 4,477,470,042.87/76,436.52
6. Step 6: Final answer
   x = 58,577.63