Finding the Fourth Proportional to 56,913.53, 78,546.02 and 42,548.49

Step by Step Solution

1. Step 1: Write the proportion equation
   56,913.53 : 78,546.02 = 42,548.49 : x
2. Step 2: Convert to fraction form
   56,913.53/78,546.02 = 42,548.49/x
3. Step 3: Cross multiply
   56,913.53x = 78,546.02 × 42,548.49
4. Step 4: Simplify right side
   56,913.53x = 3,342,014,333.77
5. Step 5: Solve for x
   x = 3,342,014,333.77/56,913.53
6. Step 6: Final answer
   x = 58,720.92