Finding the Fourth Proportional to 139,081.62, 208,661.31 and 45,652.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,081.62 : 208,661.31 = 45,652.98 : x
2. Step 2: Convert to fraction form
   139,081.62/208,661.31 = 45,652.98/x
3. Step 3: Cross multiply
   139,081.62x = 208,661.31 × 45,652.98
4. Step 4: Simplify right side
   139,081.62x = 9,526,010,612.20
5. Step 5: Solve for x
   x = 9,526,010,612.20/139,081.62
6. Step 6: Final answer
   x = 68,492.23