Finding the Fourth Proportional to 139,083.62, 208,664.31 and 45,654.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,083.62 : 208,664.31 = 45,654.98 : x
2. Step 2: Convert to fraction form
   139,083.62/208,664.31 = 45,654.98/x
3. Step 3: Cross multiply
   139,083.62x = 208,664.31 × 45,654.98
4. Step 4: Simplify right side
   139,083.62x = 9,526,564,899.76
5. Step 5: Solve for x
   x = 9,526,564,899.76/139,083.62
6. Step 6: Final answer
   x = 68,495.23