Finding the Fourth Proportional to 401,443,079.00, 553,982,733.20 and 231,897,456.77

Step by Step Solution

1. Step 1: Write the proportion equation
   401,443,079.00 : 553,982,733.20 = 231,897,456.77 : x
2. Step 2: Convert to fraction form
   401,443,079.00/553,982,733.20 = 231,897,456.77/x
3. Step 3: Cross multiply
   401,443,079.00x = 553,982,733.20 × 231,897,456.77
4. Step 4: Simplify right side
   401,443,079.00x = 128,467,186,921,383,264
5. Step 5: Solve for x
   x = 128,467,186,921,383,264/401,443,079.00
6. Step 6: Final answer
   x = 320,013,455.56