Finding the Fourth Proportional to 73,947.45, 102,065.61 and 42,135.10

Step by Step Solution

1. Step 1: Write the proportion equation
   73,947.45 : 102,065.61 = 42,135.10 : x
2. Step 2: Convert to fraction form
   73,947.45/102,065.61 = 42,135.10/x
3. Step 3: Cross multiply
   73,947.45x = 102,065.61 × 42,135.10
4. Step 4: Simplify right side
   73,947.45x = 4,300,544,683.91
5. Step 5: Solve for x
   x = 4,300,544,683.91/73,947.45
6. Step 6: Final answer
   x = 58,156.77