Finding the Fourth Proportional to 139,034.72, 208,566.68 and 45,547.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,034.72 : 208,566.68 = 45,547.76 : x
2. Step 2: Convert to fraction form
   139,034.72/208,566.68 = 45,547.76/x
3. Step 3: Cross multiply
   139,034.72x = 208,566.68 × 45,547.76
4. Step 4: Simplify right side
   139,034.72x = 9,499,745,084.64
5. Step 5: Solve for x
   x = 9,499,745,084.64/139,034.72
6. Step 6: Final answer
   x = 68,326.42