Finding the Fourth Proportional to 137,933.69, 207,003.15 and 102,477.56

Step by Step Solution

1. Step 1: Write the proportion equation
   137,933.69 : 207,003.15 = 102,477.56 : x
2. Step 2: Convert to fraction form
   137,933.69/207,003.15 = 102,477.56/x
3. Step 3: Cross multiply
   137,933.69x = 207,003.15 × 102,477.56
4. Step 4: Simplify right side
   137,933.69x = 21,213,176,689.30
5. Step 5: Solve for x
   x = 21,213,176,689.30/137,933.69
6. Step 6: Final answer
   x = 153,792.58