Finding the Fourth Proportional to 121,620.62, 182,513.98 and 42,734.86

Step by Step Solution

1. Step 1: Write the proportion equation
   121,620.62 : 182,513.98 = 42,734.86 : x
2. Step 2: Convert to fraction form
   121,620.62/182,513.98 = 42,734.86/x
3. Step 3: Cross multiply
   121,620.62x = 182,513.98 × 42,734.86
4. Step 4: Simplify right side
   121,620.62x = 7,799,709,383.34
5. Step 5: Solve for x
   x = 7,799,709,383.34/121,620.62
6. Step 6: Final answer
   x = 64,131.47