Finding the Fourth Proportional to 81,525,499.81, 122,364,866.48 and 42,691,825.18

Step by Step Solution

1. Step 1: Write the proportion equation
   81,525,499.81 : 122,364,866.48 = 42,691,825.18 : x
2. Step 2: Convert to fraction form
   81,525,499.81/122,364,866.48 = 42,691,825.18/x
3. Step 3: Cross multiply
   81,525,499.81x = 122,364,866.48 × 42,691,825.18
4. Step 4: Simplify right side
   81,525,499.81x = 5,223,979,487,877,698
5. Step 5: Solve for x
   x = 5,223,979,487,877,698/81,525,499.81
6. Step 6: Final answer
   x = 64,077,859.08