Finding the Fourth Proportional to 1,123,298,611.50, 1,685,177,724.48 and 386,272,798.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,298,611.50 : 1,685,177,724.48 = 386,272,798.10 : x
2. Step 2: Convert to fraction form
   1,123,298,611.50/1,685,177,724.48 = 386,272,798.10/x
3. Step 3: Cross multiply
   1,123,298,611.50x = 1,685,177,724.48 × 386,272,798.10
4. Step 4: Simplify right side
   1,123,298,611.50x = 650,938,314,930,680,576
5. Step 5: Solve for x
   x = 650,938,314,930,680,576/1,123,298,611.50
6. Step 6: Final answer
   x = 579,488,221.80