Finding the Fourth Proportional to 99,870,124, 149,805,186 and 28,066,540

Step by Step Solution

1. Step 1: Write the proportion equation
   99,870,124 : 149,805,186 = 28,066,540 : x
2. Step 2: Convert to fraction form
   99,870,124/149,805,186 = 28,066,540/x
3. Step 3: Cross multiply
   99,870,124x = 149,805,186 × 28,066,540
4. Step 4: Simplify right side
   99,870,124x = 4,204,513,245,076,440
5. Step 5: Solve for x
   x = 4,204,513,245,076,440/99,870,124
6. Step 6: Final answer
   x = 42,099,810