Finding the Fourth Proportional to 866,142,495.89, 1,298,694,903.83 and 275,677,686.01

Step by Step Solution

1. Step 1: Write the proportion equation
   866,142,495.89 : 1,298,694,903.83 = 275,677,686.01 : x
2. Step 2: Convert to fraction form
   866,142,495.89/1,298,694,903.83 = 275,677,686.01/x
3. Step 3: Cross multiply
   866,142,495.89x = 1,298,694,903.83 × 275,677,686.01
4. Step 4: Simplify right side
   866,142,495.89x = 358,021,205,920,833,856
5. Step 5: Solve for x
   x = 358,021,205,920,833,856/866,142,495.89
6. Step 6: Final answer
   x = 413,351,391.51