Finding the Fourth Proportional to 92,777.98, 139,052.90 and 42,788.68

Step by Step Solution

1. Step 1: Write the proportion equation
   92,777.98 : 139,052.90 = 42,788.68 : x
2. Step 2: Convert to fraction form
   92,777.98/139,052.90 = 42,788.68/x
3. Step 3: Cross multiply
   92,777.98x = 139,052.90 × 42,788.68
4. Step 4: Simplify right side
   92,777.98x = 5,949,890,041.17
5. Step 5: Solve for x
   x = 5,949,890,041.17/92,777.98
6. Step 6: Final answer
   x = 64,130.41