Finding the Fourth Proportional to 992,085,209.61, 1,488,131,826.42 and 401,886,610.50

Step by Step Solution

1. Step 1: Write the proportion equation
   992,085,209.61 : 1,488,131,826.42 = 401,886,610.50 : x
2. Step 2: Convert to fraction form
   992,085,209.61/1,488,131,826.42 = 401,886,610.50/x
3. Step 3: Cross multiply
   992,085,209.61x = 1,488,131,826.42 × 401,886,610.50
4. Step 4: Simplify right side
   992,085,209.61x = 598,060,255,697,108,224
5. Step 5: Solve for x
   x = 598,060,255,697,108,224/992,085,209.61
6. Step 6: Final answer
   x = 602,831,540.98