Finding the Fourth Proportional to 99,870,103.68, 149,805,155.52 and 28,066,519.68

Step by Step Solution

1. Step 1: Write the proportion equation
   99,870,103.68 : 149,805,155.52 = 28,066,519.68 : x
2. Step 2: Convert to fraction form
   99,870,103.68/149,805,155.52 = 28,066,519.68/x
3. Step 3: Cross multiply
   99,870,103.68x = 149,805,155.52 × 28,066,519.68
4. Step 4: Simplify right side
   99,870,103.68x = 4,204,509,345,567,541
5. Step 5: Solve for x
   x = 4,204,509,345,567,541/99,870,103.68
6. Step 6: Final answer
   x = 42,099,779.52