Finding the Fourth Proportional to 91,314,346.28, 137,018,611.04 and 42,797,129.09

Step by Step Solution

1. Step 1: Write the proportion equation
   91,314,346.28 : 137,018,611.04 = 42,797,129.09 : x
2. Step 2: Convert to fraction form
   91,314,346.28/137,018,611.04 = 42,797,129.09/x
3. Step 3: Cross multiply
   91,314,346.28x = 137,018,611.04 × 42,797,129.09
4. Step 4: Simplify right side
   91,314,346.28x = 5,864,003,183,512,300
5. Step 5: Solve for x
   x = 5,864,003,183,512,300/91,314,346.28
6. Step 6: Final answer
   x = 64,217,764.49