Finding the Fourth Proportional to 375,456,688.50, 518,092,897.86 and 216,737,945.04

Step by Step Solution

1. Step 1: Write the proportion equation
   375,456,688.50 : 518,092,897.86 = 216,737,945.04 : x
2. Step 2: Convert to fraction form
   375,456,688.50/518,092,897.86 = 216,737,945.04/x
3. Step 3: Cross multiply
   375,456,688.50x = 518,092,897.86 × 216,737,945.04
4. Step 4: Simplify right side
   375,456,688.50x = 112,290,390,021,995,008
5. Step 5: Solve for x
   x = 112,290,390,021,995,008/375,456,688.50
6. Step 6: Final answer
   x = 299,076,813.55