Finding the Fourth Proportional to 104,978.16, 157,434.94 and 30,078.24

Step by Step Solution

1. Step 1: Write the proportion equation
   104,978.16 : 157,434.94 = 30,078.24 : x
2. Step 2: Convert to fraction form
   104,978.16/157,434.94 = 30,078.24/x
3. Step 3: Cross multiply
   104,978.16x = 157,434.94 × 30,078.24
4. Step 4: Simplify right side
   104,978.16x = 4,735,365,356.92
5. Step 5: Solve for x
   x = 4,735,365,356.92/104,978.16
6. Step 6: Final answer
   x = 45,108.10