Finding the Fourth Proportional to 432,309,123.92, 648,503,549.94 and 141,177,772.56

Step by Step Solution

1. Step 1: Write the proportion equation
   432,309,123.92 : 648,503,549.94 = 141,177,772.56 : x
2. Step 2: Convert to fraction form
   432,309,123.92/648,503,549.94 = 141,177,772.56/x
3. Step 3: Cross multiply
   432,309,123.92x = 648,503,549.94 × 141,177,772.56
4. Step 4: Simplify right side
   432,309,123.92x = 91,554,286,677,781,936
5. Step 5: Solve for x
   x = 91,554,286,677,781,936/432,309,123.92
6. Step 6: Final answer
   x = 211,779,677.12