Finding the Fourth Proportional to 105,378,796.41, 145,424,460.69 and 57,693,255.18

Step by Step Solution

1. Step 1: Write the proportion equation
   105,378,796.41 : 145,424,460.69 = 57,693,255.18 : x
2. Step 2: Convert to fraction form
   105,378,796.41/145,424,460.69 = 57,693,255.18/x
3. Step 3: Cross multiply
   105,378,796.41x = 145,424,460.69 × 57,693,255.18
4. Step 4: Simplify right side
   105,378,796.41x = 8,390,010,520,002,049
5. Step 5: Solve for x
   x = 8,390,010,520,002,049/105,378,796.41
6. Step 6: Final answer
   x = 79,617,634.72