Finding the Fourth Proportional to 56,993.79, 78,654.42 and 34,339.89

Step by Step Solution

1. Step 1: Write the proportion equation
   56,993.79 : 78,654.42 = 34,339.89 : x
2. Step 2: Convert to fraction form
   56,993.79/78,654.42 = 34,339.89/x
3. Step 3: Cross multiply
   56,993.79x = 78,654.42 × 34,339.89
4. Step 4: Simplify right side
   56,993.79x = 2,700,984,130.81
5. Step 5: Solve for x
   x = 2,700,984,130.81/56,993.79
6. Step 6: Final answer
   x = 47,390.85