Finding the Fourth Proportional to 139,615.02, 209,298.60 and 50,851.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,615.02 : 209,298.60 = 50,851.98 : x
2. Step 2: Convert to fraction form
   139,615.02/209,298.60 = 50,851.98/x
3. Step 3: Cross multiply
   139,615.02x = 209,298.60 × 50,851.98
4. Step 4: Simplify right side
   139,615.02x = 10,643,248,221.23
5. Step 5: Solve for x
   x = 10,643,248,221.23/139,615.02
6. Step 6: Final answer
   x = 76,232.83