Finding the Fourth Proportional to 147,499.65, 221,257.71 and 42,315.75

Step by Step Solution

1. Step 1: Write the proportion equation
   147,499.65 : 221,257.71 = 42,315.75 : x
2. Step 2: Convert to fraction form
   147,499.65/221,257.71 = 42,315.75/x
3. Step 3: Cross multiply
   147,499.65x = 221,257.71 × 42,315.75
4. Step 4: Simplify right side
   147,499.65x = 9,362,685,941.93
5. Step 5: Solve for x
   x = 9,362,685,941.93/147,499.65
6. Step 6: Final answer
   x = 63,475.99