Finding the Fourth Proportional to 104,978.72, 157,420.68 and 30,081.71

Step by Step Solution

1. Step 1: Write the proportion equation
   104,978.72 : 157,420.68 = 30,081.71 : x
2. Step 2: Convert to fraction form
   104,978.72/157,420.68 = 30,081.71/x
3. Step 3: Cross multiply
   104,978.72x = 157,420.68 × 30,081.71
4. Step 4: Simplify right side
   104,978.72x = 4,735,483,243.76
5. Step 5: Solve for x
   x = 4,735,483,243.76/104,978.72
6. Step 6: Final answer
   x = 45,108.98