Finding the Fourth Proportional to 139,213,711.56, 208,831,195.35 and 42,177,456.30

Step by Step Solution

1. Step 1: Write the proportion equation
   139,213,711.56 : 208,831,195.35 = 42,177,456.30 : x
2. Step 2: Convert to fraction form
   139,213,711.56/208,831,195.35 = 42,177,456.30/x
3. Step 3: Cross multiply
   139,213,711.56x = 208,831,195.35 × 42,177,456.30
4. Step 4: Simplify right side
   139,213,711.56x = 8,807,968,615,951,387
5. Step 5: Solve for x
   x = 8,807,968,615,951,387/139,213,711.56
6. Step 6: Final answer
   x = 63,269,404.41