Finding the Fourth Proportional to 435,499,164.09, 600,585,155.15 and 317,838,123.45

Step by Step Solution

1. Step 1: Write the proportion equation
   435,499,164.09 : 600,585,155.15 = 317,838,123.45 : x
2. Step 2: Convert to fraction form
   435,499,164.09/600,585,155.15 = 317,838,123.45/x
3. Step 3: Cross multiply
   435,499,164.09x = 600,585,155.15 × 317,838,123.45
4. Step 4: Simplify right side
   435,499,164.09x = 190,888,858,683,213,888
5. Step 5: Solve for x
   x = 190,888,858,683,213,888/435,499,164.09
6. Step 6: Final answer
   x = 438,321,986.41