Finding the Fourth Proportional to 493,922,003.17, 740,926,553.67 and 139,399,443.76

Step by Step Solution

1. Step 1: Write the proportion equation
   493,922,003.17 : 740,926,553.67 = 139,399,443.76 : x
2. Step 2: Convert to fraction form
   493,922,003.17/740,926,553.67 = 139,399,443.76/x
3. Step 3: Cross multiply
   493,922,003.17x = 740,926,553.67 × 139,399,443.76
4. Step 4: Simplify right side
   493,922,003.17x = 103,284,749,448,611,776
5. Step 5: Solve for x
   x = 103,284,749,448,611,776/493,922,003.17
6. Step 6: Final answer
   x = 209,111,456.44