Finding the Fourth Proportional to 139,359,439.29, 209,025,651.48 and 42,315,999.94

Step by Step Solution

1. Step 1: Write the proportion equation
   139,359,439.29 : 209,025,651.48 = 42,315,999.94 : x
2. Step 2: Convert to fraction form
   139,359,439.29/209,025,651.48 = 42,315,999.94/x
3. Step 3: Cross multiply
   139,359,439.29x = 209,025,651.48 × 42,315,999.94
4. Step 4: Simplify right side
   139,359,439.29x = 8,845,129,455,486,140
5. Step 5: Solve for x
   x = 8,845,129,455,486,140/139,359,439.29
6. Step 6: Final answer
   x = 63,469,898.42