Finding the Fourth Proportional to 81,525,499.25, 122,364,865.64 and 42,691,824.61

Step by Step Solution

1. Step 1: Write the proportion equation
   81,525,499.25 : 122,364,865.64 = 42,691,824.61 : x
2. Step 2: Convert to fraction form
   81,525,499.25/122,364,865.64 = 42,691,824.61/x
3. Step 3: Cross multiply
   81,525,499.25x = 122,364,865.64 × 42,691,824.61
4. Step 4: Simplify right side
   81,525,499.25x = 5,223,979,382,578,286
5. Step 5: Solve for x
   x = 5,223,979,382,578,286/81,525,499.25
6. Step 6: Final answer
   x = 64,077,858.23