Finding the Fourth Proportional to 372,788,454.69, 514,334,047.50 and 216,124,289.82

Step by Step Solution

1. Step 1: Write the proportion equation
   372,788,454.69 : 514,334,047.50 = 216,124,289.82 : x
2. Step 2: Convert to fraction form
   372,788,454.69/514,334,047.50 = 216,124,289.82/x
3. Step 3: Cross multiply
   372,788,454.69x = 514,334,047.50 × 216,124,289.82
4. Step 4: Simplify right side
   372,788,454.69x = 111,160,080,746,183,648
5. Step 5: Solve for x
   x = 111,160,080,746,183,648/372,788,454.69
6. Step 6: Final answer
   x = 298,185,416.82