Finding the Fourth Proportional to 72,008,783.32, 99,372,746.10 and 42,257,239.96

Step by Step Solution

1. Step 1: Write the proportion equation
   72,008,783.32 : 99,372,746.10 = 42,257,239.96 : x
2. Step 2: Convert to fraction form
   72,008,783.32/99,372,746.10 = 42,257,239.96/x
3. Step 3: Cross multiply
   72,008,783.32x = 99,372,746.10 × 42,257,239.96
4. Step 4: Simplify right side
   72,008,783.32x = 4,199,217,977,431,854
5. Step 5: Solve for x
   x = 4,199,217,977,431,854/72,008,783.32
6. Step 6: Final answer
   x = 58,315,357.99