Finding the Fourth Proportional to 78,971,902.32, 118,509,003.78 and 42,605,394.69

Step by Step Solution

1. Step 1: Write the proportion equation
   78,971,902.32 : 118,509,003.78 = 42,605,394.69 : x
2. Step 2: Convert to fraction form
   78,971,902.32/118,509,003.78 = 42,605,394.69/x
3. Step 3: Cross multiply
   78,971,902.32x = 118,509,003.78 × 42,605,394.69
4. Step 4: Simplify right side
   78,971,902.32x = 5,049,122,880,365,602
5. Step 5: Solve for x
   x = 5,049,122,880,365,602/78,971,902.32
6. Step 6: Final answer
   x = 63,935,687.66