Finding the Fourth Proportional to 42,442,947.59, 63,664,341.92 and 13,299,017.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,442,947.59 : 63,664,341.92 = 13,299,017.69 : x
2. Step 2: Convert to fraction form
   42,442,947.59/63,664,341.92 = 13,299,017.69/x
3. Step 3: Cross multiply
   42,442,947.59x = 63,664,341.92 × 13,299,017.69
4. Step 4: Simplify right side
   42,442,947.59x = 846,673,209,416,288.50
5. Step 5: Solve for x
   x = 846,673,209,416,288.50/42,442,947.59
6. Step 6: Final answer
   x = 19,948,501.64