Finding the Fourth Proportional to 73,982.50, 102,099.94 and 42,145.30

Step by Step Solution

1. Step 1: Write the proportion equation
   73,982.50 : 102,099.94 = 42,145.30 : x
2. Step 2: Convert to fraction form
   73,982.50/102,099.94 = 42,145.30/x
3. Step 3: Cross multiply
   73,982.50x = 102,099.94 × 42,145.30
4. Step 4: Simplify right side
   73,982.50x = 4,303,032,601.28
5. Step 5: Solve for x
   x = 4,303,032,601.28/73,982.50
6. Step 6: Final answer
   x = 58,162.84