Finding the Fourth Proportional to 53,978.77, 74,490.83 and 30,106.99

Step by Step Solution

1. Step 1: Write the proportion equation
   53,978.77 : 74,490.83 = 30,106.99 : x
2. Step 2: Convert to fraction form
   53,978.77/74,490.83 = 30,106.99/x
3. Step 3: Cross multiply
   53,978.77x = 74,490.83 × 30,106.99
4. Step 4: Simplify right side
   53,978.77x = 2,242,694,150.91
5. Step 5: Solve for x
   x = 2,242,694,150.91/53,978.77
6. Step 6: Final answer
   x = 41,547.71