Finding the Fourth Proportional to 365,638,799.86, 548,499,815.89 and 132,579,279.53

Step by Step Solution

1. Step 1: Write the proportion equation
   365,638,799.86 : 548,499,815.89 = 132,579,279.53 : x
2. Step 2: Convert to fraction form
   365,638,799.86/548,499,815.89 = 132,579,279.53/x
3. Step 3: Cross multiply
   365,638,799.86x = 548,499,815.89 × 132,579,279.53
4. Step 4: Simplify right side
   365,638,799.86x = 72,719,710,412,389,328
5. Step 5: Solve for x
   x = 72,719,710,412,389,328/365,638,799.86
6. Step 6: Final answer
   x = 198,884,009.14