Finding the Fourth Proportional to 112,663,945.28, 168,704,868.33 and 77,756,772.15

Step by Step Solution

1. Step 1: Write the proportion equation
   112,663,945.28 : 168,704,868.33 = 77,756,772.15 : x
2. Step 2: Convert to fraction form
   112,663,945.28/168,704,868.33 = 77,756,772.15/x
3. Step 3: Cross multiply
   112,663,945.28x = 168,704,868.33 × 77,756,772.15
4. Step 4: Simplify right side
   112,663,945.28x = 13,117,946,007,331,564
5. Step 5: Solve for x
   x = 13,117,946,007,331,564/112,663,945.28
6. Step 6: Final answer
   x = 116,434,285.83