Finding the Fourth Proportional to 121,967.31, 182,971.49 and 42,002.09

Step by Step Solution

1. Step 1: Write the proportion equation
   121,967.31 : 182,971.49 = 42,002.09 : x
2. Step 2: Convert to fraction form
   121,967.31/182,971.49 = 42,002.09/x
3. Step 3: Cross multiply
   121,967.31x = 182,971.49 × 42,002.09
4. Step 4: Simplify right side
   121,967.31x = 7,685,183,865.55
5. Step 5: Solve for x
   x = 7,685,183,865.55/121,967.31
6. Step 6: Final answer
   x = 63,010.19