Finding the Fourth Proportional to 66,064.69, 99,112.18 and 28,631.05

Step by Step Solution

1. Step 1: Write the proportion equation
   66,064.69 : 99,112.18 = 28,631.05 : x
2. Step 2: Convert to fraction form
   66,064.69/99,112.18 = 28,631.05/x
3. Step 3: Cross multiply
   66,064.69x = 99,112.18 × 28,631.05
4. Step 4: Simplify right side
   66,064.69x = 2,837,685,852.77
5. Step 5: Solve for x
   x = 2,837,685,852.77/66,064.69
6. Step 6: Final answer
   x = 42,953.14