Finding the Fourth Proportional to 53,978.54, 74,490.50 and 30,106.76

Step by Step Solution

1. Step 1: Write the proportion equation
   53,978.54 : 74,490.50 = 30,106.76 : x
2. Step 2: Convert to fraction form
   53,978.54/74,490.50 = 30,106.76/x
3. Step 3: Cross multiply
   53,978.54x = 74,490.50 × 30,106.76
4. Step 4: Simplify right side
   53,978.54x = 2,242,667,308.59
5. Step 5: Solve for x
   x = 2,242,667,308.59/53,978.54
6. Step 6: Final answer
   x = 41,547.39