Finding the Fourth Proportional to 92,778.12, 139,184.54 and 42,180.84

Step by Step Solution

1. Step 1: Write the proportion equation
   92,778.12 : 139,184.54 = 42,180.84 : x
2. Step 2: Convert to fraction form
   92,778.12/139,184.54 = 42,180.84/x
3. Step 3: Cross multiply
   92,778.12x = 139,184.54 × 42,180.84
4. Step 4: Simplify right side
   92,778.12x = 5,870,920,812.21
5. Step 5: Solve for x
   x = 5,870,920,812.21/92,778.12
6. Step 6: Final answer
   x = 63,279.15