Finding the Fourth Proportional to 90,680.94, 125,100.86 and 56,630.32

Step by Step Solution

1. Step 1: Write the proportion equation
   90,680.94 : 125,100.86 = 56,630.32 : x
2. Step 2: Convert to fraction form
   90,680.94/125,100.86 = 56,630.32/x
3. Step 3: Cross multiply
   90,680.94x = 125,100.86 × 56,630.32
4. Step 4: Simplify right side
   90,680.94x = 7,084,501,138.17
5. Step 5: Solve for x
   x = 7,084,501,138.17/90,680.94
6. Step 6: Final answer
   x = 78,125.58