Finding the Fourth Proportional to 81,900.84, 122,870.70 and 42,476.52

Step by Step Solution

1. Step 1: Write the proportion equation
   81,900.84 : 122,870.70 = 42,476.52 : x
2. Step 2: Convert to fraction form
   81,900.84/122,870.70 = 42,476.52/x
3. Step 3: Cross multiply
   81,900.84x = 122,870.70 × 42,476.52
4. Step 4: Simplify right side
   81,900.84x = 5,219,119,745.96
5. Step 5: Solve for x
   x = 5,219,119,745.96/81,900.84
6. Step 6: Final answer
   x = 63,724.86