Finding the Fourth Proportional to 144,838,949.42, 199,881,538.38 and 78,763,312.18

Step by Step Solution

1. Step 1: Write the proportion equation
   144,838,949.42 : 199,881,538.38 = 78,763,312.18 : x
2. Step 2: Convert to fraction form
   144,838,949.42/199,881,538.38 = 78,763,312.18/x
3. Step 3: Cross multiply
   144,838,949.42x = 199,881,538.38 × 78,763,312.18
4. Step 4: Simplify right side
   144,838,949.42x = 15,743,332,006,442,592
5. Step 5: Solve for x
   x = 15,743,332,006,442,592/144,838,949.42
6. Step 6: Final answer
   x = 108,695,430.82