Finding the Fourth Proportional to 139,297,554.82, 208,946,818.23 and 42,254,098.66

Step by Step Solution

1. Step 1: Write the proportion equation
   139,297,554.82 : 208,946,818.23 = 42,254,098.66 : x
2. Step 2: Convert to fraction form
   139,297,554.82/208,946,818.23 = 42,254,098.66/x
3. Step 3: Cross multiply
   139,297,554.82x = 208,946,818.23 × 42,254,098.66
4. Step 4: Simplify right side
   139,297,554.82x = 8,828,859,472,183,505
5. Step 5: Solve for x
   x = 8,828,859,472,183,505/139,297,554.82
6. Step 6: Final answer
   x = 63,381,295.41