Finding the Fourth Proportional to 139,878.90, 209,814.57 and 34,696.62

Step by Step Solution

1. Step 1: Write the proportion equation
   139,878.90 : 209,814.57 = 34,696.62 : x
2. Step 2: Convert to fraction form
   139,878.90/209,814.57 = 34,696.62/x
3. Step 3: Cross multiply
   139,878.90x = 209,814.57 × 34,696.62
4. Step 4: Simplify right side
   139,878.90x = 7,279,856,405.75
5. Step 5: Solve for x
   x = 7,279,856,405.75/139,878.90
6. Step 6: Final answer
   x = 52,043.99