Finding the Fourth Proportional to 91,945,212.58, 137,951,449.20 and 42,784,512.03

Step by Step Solution

1. Step 1: Write the proportion equation
   91,945,212.58 : 137,951,449.20 = 42,784,512.03 : x
2. Step 2: Convert to fraction form
   91,945,212.58/137,951,449.20 = 42,784,512.03/x
3. Step 3: Cross multiply
   91,945,212.58x = 137,951,449.20 × 42,784,512.03
4. Step 4: Simplify right side
   91,945,212.58x = 5,902,185,437,853,334
5. Step 5: Solve for x
   x = 5,902,185,437,853,334/91,945,212.58
6. Step 6: Final answer
   x = 64,192,417.12