Finding the Fourth Proportional to 151,388.50, 208,907.83 and 83,392.15

Step by Step Solution

1. Step 1: Write the proportion equation
   151,388.50 : 208,907.83 = 83,392.15 : x
2. Step 2: Convert to fraction form
   151,388.50/208,907.83 = 83,392.15/x
3. Step 3: Cross multiply
   151,388.50x = 208,907.83 × 83,392.15
4. Step 4: Simplify right side
   151,388.50x = 17,421,273,095.53
5. Step 5: Solve for x
   x = 17,421,273,095.53/151,388.50
6. Step 6: Final answer
   x = 115,076.59