Finding the Fourth Proportional to 121,669.22, 182,505 and 42,784.10

Step by Step Solution

1. Step 1: Write the proportion equation
   121,669.22 : 182,505 = 42,784.10 : x
2. Step 2: Convert to fraction form
   121,669.22/182,505 = 42,784.10/x
3. Step 3: Cross multiply
   121,669.22x = 182,505 × 42,784.10
4. Step 4: Simplify right side
   121,669.22x = 7,808,312,170.50
5. Step 5: Solve for x
   x = 7,808,312,170.50/121,669.22
6. Step 6: Final answer
   x = 64,176.56