Finding the Fourth Proportional to 99,723,646.62, 149,632,842.78 and 69,065,405.82

Step by Step Solution

1. Step 1: Write the proportion equation
   99,723,646.62 : 149,632,842.78 = 69,065,405.82 : x
2. Step 2: Convert to fraction form
   99,723,646.62/149,632,842.78 = 69,065,405.82/x
3. Step 3: Cross multiply
   99,723,646.62x = 149,632,842.78 × 69,065,405.82
4. Step 4: Simplify right side
   99,723,646.62x = 10,334,453,010,600,956
5. Step 5: Solve for x
   x = 10,334,453,010,600,956/99,723,646.62
6. Step 6: Final answer
   x = 103,630,917.65