Finding the Fourth Proportional to 452,510.21, 624,483.72 and 258,978.67

Step by Step Solution

1. Step 1: Write the proportion equation
   452,510.21 : 624,483.72 = 258,978.67 : x
2. Step 2: Convert to fraction form
   452,510.21/624,483.72 = 258,978.67/x
3. Step 3: Cross multiply
   452,510.21x = 624,483.72 × 258,978.67
4. Step 4: Simplify right side
   452,510.21x = 161,727,963,242.25
5. Step 5: Solve for x
   x = 161,727,963,242.25/452,510.21
6. Step 6: Final answer
   x = 357,401.80