Finding the Fourth Proportional to 99,723,686.68, 149,632,902.78 and 69,065,445.88

Step by Step Solution

1. Step 1: Write the proportion equation
   99,723,686.68 : 149,632,902.78 = 69,065,445.88 : x
2. Step 2: Convert to fraction form
   99,723,686.68/149,632,902.78 = 69,065,445.88/x
3. Step 3: Cross multiply
   99,723,686.68x = 149,632,902.78 × 69,065,445.88
4. Step 4: Simplify right side
   99,723,686.68x = 10,334,463,148,819,390
5. Step 5: Solve for x
   x = 10,334,463,148,819,390/99,723,686.68
6. Step 6: Final answer
   x = 103,630,977.68