Finding the Fourth Proportional to 139,365,443.23, 209,048,496.84 and 42,321,880.55

Step by Step Solution

1. Step 1: Write the proportion equation
   139,365,443.23 : 209,048,496.84 = 42,321,880.55 : x
2. Step 2: Convert to fraction form
   139,365,443.23/209,048,496.84 = 42,321,880.55/x
3. Step 3: Cross multiply
   139,365,443.23x = 209,048,496.84 × 42,321,880.55
4. Step 4: Simplify right side
   139,365,443.23x = 8,847,325,512,942,154
5. Step 5: Solve for x
   x = 8,847,325,512,942,154/139,365,443.23
6. Step 6: Final answer
   x = 63,482,921.65