Finding the Fourth Proportional to 139,408,061.20, 209,161,858.20 and 58,653,782.80

Step by Step Solution

1. Step 1: Write the proportion equation
   139,408,061.20 : 209,161,858.20 = 58,653,782.80 : x
2. Step 2: Convert to fraction form
   139,408,061.20/209,161,858.20 = 58,653,782.80/x
3. Step 3: Cross multiply
   139,408,061.20x = 209,161,858.20 × 58,653,782.80
4. Step 4: Simplify right side
   139,408,061.20x = 12,268,134,200,907,198
5. Step 5: Solve for x
   x = 12,268,134,200,907,198/139,408,061.20
6. Step 6: Final answer
   x = 88,001,612.64