Finding the Fourth Proportional to 139,012,931.21, 191,825,164.71 and 82,487,935.17

Step by Step Solution

1. Step 1: Write the proportion equation
   139,012,931.21 : 191,825,164.71 = 82,487,935.17 : x
2. Step 2: Convert to fraction form
   139,012,931.21/191,825,164.71 = 82,487,935.17/x
3. Step 3: Cross multiply
   139,012,931.21x = 191,825,164.71 × 82,487,935.17
4. Step 4: Simplify right side
   139,012,931.21x = 15,823,261,750,573,052
5. Step 5: Solve for x
   x = 15,823,261,750,573,052/139,012,931.21
6. Step 6: Final answer
   x = 113,825,826.23