Finding the Fourth Proportional to 99,665,060.10, 149,497,590.15 and 72,791,204.10

Step by Step Solution

1. Step 1: Write the proportion equation
   99,665,060.10 : 149,497,590.15 = 72,791,204.10 : x
2. Step 2: Convert to fraction form
   99,665,060.10/149,497,590.15 = 72,791,204.10/x
3. Step 3: Cross multiply
   99,665,060.10x = 149,497,590.15 × 72,791,204.10
4. Step 4: Simplify right side
   99,665,060.10x = 10,882,109,597,066,800
5. Step 5: Solve for x
   x = 10,882,109,597,066,800/99,665,060.10
6. Step 6: Final answer
   x = 109,186,806.15