Finding the Fourth Proportional to 78,971,902.45, 118,509,003.96 and 42,605,394.82

Step by Step Solution

1. Step 1: Write the proportion equation
   78,971,902.45 : 118,509,003.96 = 42,605,394.82 : x
2. Step 2: Convert to fraction form
   78,971,902.45/118,509,003.96 = 42,605,394.82/x
3. Step 3: Cross multiply
   78,971,902.45x = 118,509,003.96 × 42,605,394.82
4. Step 4: Simplify right side
   78,971,902.45x = 5,049,122,902,635,171
5. Step 5: Solve for x
   x = 5,049,122,902,635,171/78,971,902.45
6. Step 6: Final answer
   x = 63,935,687.84