Finding the Fourth Proportional to 140,555.30, 210,930.15 and 101,140.70

Step by Step Solution

1. Step 1: Write the proportion equation
   140,555.30 : 210,930.15 = 101,140.70 : x
2. Step 2: Convert to fraction form
   140,555.30/210,930.15 = 101,140.70/x
3. Step 3: Cross multiply
   140,555.30x = 210,930.15 × 101,140.70
4. Step 4: Simplify right side
   140,555.30x = 21,333,623,022.11
5. Step 5: Solve for x
   x = 21,333,623,022.11/140,555.30
6. Step 6: Final answer
   x = 151,780.99