Finding the Fourth Proportional to 81,525,500.81, 122,364,867.98 and 42,691,826.18

Step by Step Solution

1. Step 1: Write the proportion equation
   81,525,500.81 : 122,364,867.98 = 42,691,826.18 : x
2. Step 2: Convert to fraction form
   81,525,500.81/122,364,867.98 = 42,691,826.18/x
3. Step 3: Cross multiply
   81,525,500.81x = 122,364,867.98 × 42,691,826.18
4. Step 4: Simplify right side
   81,525,500.81x = 5,223,979,674,340,808
5. Step 5: Solve for x
   x = 5,223,979,674,340,808/81,525,500.81
6. Step 6: Final answer
   x = 64,077,860.58