Finding the Fourth Proportional to 76,483.72, 105,546.90 and 42,949

Step by Step Solution

1. Step 1: Write the proportion equation
   76,483.72 : 105,546.90 = 42,949 : x
2. Step 2: Convert to fraction form
   76,483.72/105,546.90 = 42,949/x
3. Step 3: Cross multiply
   76,483.72x = 105,546.90 × 42,949
4. Step 4: Simplify right side
   76,483.72x = 4,533,133,808.10
5. Step 5: Solve for x
   x = 4,533,133,808.10/76,483.72
6. Step 6: Final answer
   x = 59,269.26