Finding the Fourth Proportional to 78,492.12, 108,319.32 and 42,682.11

Step by Step Solution

1. Step 1: Write the proportion equation
   78,492.12 : 108,319.32 = 42,682.11 : x
2. Step 2: Convert to fraction form
   78,492.12/108,319.32 = 42,682.11/x
3. Step 3: Cross multiply
   78,492.12x = 108,319.32 × 42,682.11
4. Step 4: Simplify right side
   78,492.12x = 4,623,297,131.37
5. Step 5: Solve for x
   x = 4,623,297,131.37/78,492.12
6. Step 6: Final answer
   x = 58,901.42