Finding the Fourth Proportional to 139,359,448.57, 209,025,665.35 and 42,316,009.19

Step by Step Solution

1. Step 1: Write the proportion equation
   139,359,448.57 : 209,025,665.35 = 42,316,009.19 : x
2. Step 2: Convert to fraction form
   139,359,448.57/209,025,665.35 = 42,316,009.19/x
3. Step 3: Cross multiply
   139,359,448.57x = 209,025,665.35 × 42,316,009.19
4. Step 4: Simplify right side
   139,359,448.57x = 8,845,131,975,896,464
5. Step 5: Solve for x
   x = 8,845,131,975,896,464/139,359,448.57
6. Step 6: Final answer
   x = 63,469,912.28