Finding the Fourth Proportional to 139,470,926.76, 209,236,654.62 and 42,424,112.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,470,926.76 : 209,236,654.62 = 42,424,112.10 : x
2. Step 2: Convert to fraction form
   139,470,926.76/209,236,654.62 = 42,424,112.10/x
3. Step 3: Cross multiply
   139,470,926.76x = 209,236,654.62 × 42,424,112.10
4. Step 4: Simplify right side
   139,470,926.76x = 8,876,679,291,027,863
5. Step 5: Solve for x
   x = 8,876,679,291,027,863/139,470,926.76
6. Step 6: Final answer
   x = 63,645,373.97