Finding the Fourth Proportional to 52,878,568.69, 79,132,286.93 and 42,478,231.79

Step by Step Solution

1. Step 1: Write the proportion equation
   52,878,568.69 : 79,132,286.93 = 42,478,231.79 : x
2. Step 2: Convert to fraction form
   52,878,568.69/79,132,286.93 = 42,478,231.79/x
3. Step 3: Cross multiply
   52,878,568.69x = 79,132,286.93 × 42,478,231.79
4. Step 4: Simplify right side
   52,878,568.69x = 3,361,399,626,620,888
5. Step 5: Solve for x
   x = 3,361,399,626,620,888/52,878,568.69
6. Step 6: Final answer
   x = 63,568,279.36