Finding the Fourth Proportional to 138,985.68, 208,476.78 and 33,804.72

Step by Step Solution

1. Step 1: Write the proportion equation
   138,985.68 : 208,476.78 = 33,804.72 : x
2. Step 2: Convert to fraction form
   138,985.68/208,476.78 = 33,804.72/x
3. Step 3: Cross multiply
   138,985.68x = 208,476.78 × 33,804.72
4. Step 4: Simplify right side
   138,985.68x = 7,047,499,174.40
5. Step 5: Solve for x
   x = 7,047,499,174.40/138,985.68
6. Step 6: Final answer
   x = 50,706.66