Finding the Fourth Proportional to 92,931.48, 139,376.18 and 42,984.18

Step by Step Solution

1. Step 1: Write the proportion equation
   92,931.48 : 139,376.18 = 42,984.18 : x
2. Step 2: Convert to fraction form
   92,931.48/139,376.18 = 42,984.18/x
3. Step 3: Cross multiply
   92,931.48x = 139,376.18 × 42,984.18
4. Step 4: Simplify right side
   92,931.48x = 5,990,970,808.83
5. Step 5: Solve for x
   x = 5,990,970,808.83/92,931.48
6. Step 6: Final answer
   x = 64,466.54