Finding the Fourth Proportional to 78,100.52, 107,786.67 and 56,314.71

Step by Step Solution

1. Step 1: Write the proportion equation
   78,100.52 : 107,786.67 = 56,314.71 : x
2. Step 2: Convert to fraction form
   78,100.52/107,786.67 = 56,314.71/x
3. Step 3: Cross multiply
   78,100.52x = 107,786.67 × 56,314.71
4. Step 4: Simplify right side
   78,100.52x = 6,069,974,781.34
5. Step 5: Solve for x
   x = 6,069,974,781.34/78,100.52
6. Step 6: Final answer
   x = 77,720.04