Finding the Fourth Proportional to 72,972.50, 100,702.64 and 42,758.69

Step by Step Solution

1. Step 1: Write the proportion equation
   72,972.50 : 100,702.64 = 42,758.69 : x
2. Step 2: Convert to fraction form
   72,972.50/100,702.64 = 42,758.69/x
3. Step 3: Cross multiply
   72,972.50x = 100,702.64 × 42,758.69
4. Step 4: Simplify right side
   72,972.50x = 4,305,912,569.33
5. Step 5: Solve for x
   x = 4,305,912,569.33/72,972.50
6. Step 6: Final answer
   x = 59,007.34