Finding the Fourth Proportional to 102,947.49, 142,069.94 and 57,624.34

Step by Step Solution

1. Step 1: Write the proportion equation
   102,947.49 : 142,069.94 = 57,624.34 : x
2. Step 2: Convert to fraction form
   102,947.49/142,069.94 = 57,624.34/x
3. Step 3: Cross multiply
   102,947.49x = 142,069.94 × 57,624.34
4. Step 4: Simplify right side
   102,947.49x = 8,186,686,526.34
5. Step 5: Solve for x
   x = 8,186,686,526.34/102,947.49
6. Step 6: Final answer
   x = 79,522.93