Finding the Fourth Proportional to 42,469,220, 63,704,063.28 and 10,556,516

Step by Step Solution

1. Step 1: Write the proportion equation
   42,469,220 : 63,704,063.28 = 10,556,516 : x
2. Step 2: Convert to fraction form
   42,469,220/63,704,063.28 = 10,556,516/x
3. Step 3: Cross multiply
   42,469,220x = 63,704,063.28 × 10,556,516
4. Step 4: Simplify right side
   42,469,220x = 672,492,963,280,332.50
5. Step 5: Solve for x
   x = 672,492,963,280,332.50/42,469,220
6. Step 6: Final answer
   x = 15,834,831.99