Finding the Fourth Proportional to 139,550.34, 209,256.41 and 59,575.80

Step by Step Solution

1. Step 1: Write the proportion equation
   139,550.34 : 209,256.41 = 59,575.80 : x
2. Step 2: Convert to fraction form
   139,550.34/209,256.41 = 59,575.80/x
3. Step 3: Cross multiply
   139,550.34x = 209,256.41 × 59,575.80
4. Step 4: Simplify right side
   139,550.34x = 12,466,618,964.53
5. Step 5: Solve for x
   x = 12,466,618,964.53/139,550.34
6. Step 6: Final answer
   x = 89,334.20