Finding the Fourth Proportional to 139,829,654.63, 209,735,697.20 and 42,777,651.35

Step by Step Solution

1. Step 1: Write the proportion equation
   139,829,654.63 : 209,735,697.20 = 42,777,651.35 : x
2. Step 2: Convert to fraction form
   139,829,654.63/209,735,697.20 = 42,777,651.35/x
3. Step 3: Cross multiply
   139,829,654.63x = 209,735,697.20 × 42,777,651.35
4. Step 4: Simplify right side
   139,829,654.63x = 8,972,000,530,781,222
5. Step 5: Solve for x
   x = 8,972,000,530,781,222/139,829,654.63
6. Step 6: Final answer
   x = 64,163,789.54