Finding the Fourth Proportional to 45,139,789.28, 62,311,978.18 and 30,475,318.68

Step by Step Solution

1. Step 1: Write the proportion equation
   45,139,789.28 : 62,311,978.18 = 30,475,318.68 : x
2. Step 2: Convert to fraction form
   45,139,789.28/62,311,978.18 = 30,475,318.68/x
3. Step 3: Cross multiply
   45,139,789.28x = 62,311,978.18 × 30,475,318.68
4. Step 4: Simplify right side
   45,139,789.28x = 1,898,977,392,616,706.25
5. Step 5: Solve for x
   x = 1,898,977,392,616,706.25/45,139,789.28
6. Step 6: Final answer
   x = 42,068,813.85