Finding the Fourth Proportional to 300,127,139.46, 414,218,950.61 and 172,943,074.01

Step by Step Solution

1. Step 1: Write the proportion equation
   300,127,139.46 : 414,218,950.61 = 172,943,074.01 : x
2. Step 2: Convert to fraction form
   300,127,139.46/414,218,950.61 = 172,943,074.01/x
3. Step 3: Cross multiply
   300,127,139.46x = 414,218,950.61 × 172,943,074.01
4. Step 4: Simplify right side
   300,127,139.46x = 71,636,298,631,860,592
5. Step 5: Solve for x
   x = 71,636,298,631,860,592/300,127,139.46
6. Step 6: Final answer
   x = 238,686,507.19