Finding the Fourth Proportional to 139,816.72, 209,675.67 and 45,043.08

Step by Step Solution

1. Step 1: Write the proportion equation
   139,816.72 : 209,675.67 = 45,043.08 : x
2. Step 2: Convert to fraction form
   139,816.72/209,675.67 = 45,043.08/x
3. Step 3: Cross multiply
   139,816.72x = 209,675.67 × 45,043.08
4. Step 4: Simplify right side
   139,816.72x = 9,444,437,977.86
5. Step 5: Solve for x
   x = 9,444,437,977.86/139,816.72
6. Step 6: Final answer
   x = 67,548.70