Finding the Fourth Proportional to 79,837.81, 119,792.12 and 42,388.85

Step by Step Solution

1. Step 1: Write the proportion equation
   79,837.81 : 119,792.12 = 42,388.85 : x
2. Step 2: Convert to fraction form
   79,837.81/119,792.12 = 42,388.85/x
3. Step 3: Cross multiply
   79,837.81x = 119,792.12 × 42,388.85
4. Step 4: Simplify right side
   79,837.81x = 5,077,850,293.40
5. Step 5: Solve for x
   x = 5,077,850,293.40/79,837.81
6. Step 6: Final answer
   x = 63,602.08