Finding the Fourth Proportional to 31,040,925.51, 42,829,721.42 and 18,820,785.99

Step by Step Solution

1. Step 1: Write the proportion equation
   31,040,925.51 : 42,829,721.42 = 18,820,785.99 : x
2. Step 2: Convert to fraction form
   31,040,925.51/42,829,721.42 = 18,820,785.99/x
3. Step 3: Cross multiply
   31,040,925.51x = 42,829,721.42 × 18,820,785.99
4. Step 4: Simplify right side
   31,040,925.51x = 806,089,020,763,034.88
5. Step 5: Solve for x
   x = 806,089,020,763,034.88/31,040,925.51
6. Step 6: Final answer
   x = 25,968,588.49