Finding the Fourth Proportional to 76,622.69, 105,737.30 and 42,631.25

Step by Step Solution

1. Step 1: Write the proportion equation
   76,622.69 : 105,737.30 = 42,631.25 : x
2. Step 2: Convert to fraction form
   76,622.69/105,737.30 = 42,631.25/x
3. Step 3: Cross multiply
   76,622.69x = 105,737.30 × 42,631.25
4. Step 4: Simplify right side
   76,622.69x = 4,507,712,688.65
5. Step 5: Solve for x
   x = 4,507,712,688.65/76,622.69
6. Step 6: Final answer
   x = 58,830.00