Finding the Fourth Proportional to 139,432,578.80, 208,744,982.23 and 105,033,851.37

Step by Step Solution

1. Step 1: Write the proportion equation
   139,432,578.80 : 208,744,982.23 = 105,033,851.37 : x
2. Step 2: Convert to fraction form
   139,432,578.80/208,744,982.23 = 105,033,851.37/x
3. Step 3: Cross multiply
   139,432,578.80x = 208,744,982.23 × 105,033,851.37
4. Step 4: Simplify right side
   139,432,578.80x = 21,925,289,437,779,112
5. Step 5: Solve for x
   x = 21,925,289,437,779,112/139,432,578.80
6. Step 6: Final answer
   x = 157,246,531.81