Finding the Fourth Proportional to 72,389,582.82, 99,898,588.10 and 39,350,338.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,389,582.82 : 99,898,588.10 = 39,350,338.72 : x
2. Step 2: Convert to fraction form
   72,389,582.82/99,898,588.10 = 39,350,338.72/x
3. Step 3: Cross multiply
   72,389,582.82x = 99,898,588.10 × 39,350,338.72
4. Step 4: Simplify right side
   72,389,582.82x = 3,931,043,279,233,391
5. Step 5: Solve for x
   x = 3,931,043,279,233,391/72,389,582.82
6. Step 6: Final answer
   x = 54,303,991.35