Finding the Fourth Proportional to 99,213,414.96, 136,870,325.76 and 57,942,100.56

Step by Step Solution

1. Step 1: Write the proportion equation
   99,213,414.96 : 136,870,325.76 = 57,942,100.56 : x
2. Step 2: Convert to fraction form
   99,213,414.96/136,870,325.76 = 57,942,100.56/x
3. Step 3: Cross multiply
   99,213,414.96x = 136,870,325.76 × 57,942,100.56
4. Step 4: Simplify right side
   99,213,414.96x = 7,930,554,178,865,878
5. Step 5: Solve for x
   x = 7,930,554,178,865,878/99,213,414.96
6. Step 6: Final answer
   x = 79,934,292.98