Finding the Fourth Proportional to 62,784.72, 86,639.94 and 34,488.72

Step by Step Solution

1. Step 1: Write the proportion equation
   62,784.72 : 86,639.94 = 34,488.72 : x
2. Step 2: Convert to fraction form
   62,784.72/86,639.94 = 34,488.72/x
3. Step 3: Cross multiply
   62,784.72x = 86,639.94 × 34,488.72
4. Step 4: Simplify right side
   62,784.72x = 2,988,100,631.48
5. Step 5: Solve for x
   x = 2,988,100,631.48/62,784.72
6. Step 6: Final answer
   x = 47,592.80