Finding the Fourth Proportional to 318,947,100.98, 440,147,295.98 and 172,269,384.98

Step by Step Solution

1. Step 1: Write the proportion equation
   318,947,100.98 : 440,147,295.98 = 172,269,384.98 : x
2. Step 2: Convert to fraction form
   318,947,100.98/440,147,295.98 = 172,269,384.98/x
3. Step 3: Cross multiply
   318,947,100.98x = 440,147,295.98 × 172,269,384.98
4. Step 4: Simplify right side
   318,947,100.98x = 75,823,903,979,084,624
5. Step 5: Solve for x
   x = 75,823,903,979,084,624/318,947,100.98
6. Step 6: Final answer
   x = 237,731,911.49