Finding the Fourth Proportional to 118,780, 163,925.72 and 67,780.96

Step by Step Solution

1. Step 1: Write the proportion equation
   118,780 : 163,925.72 = 67,780.96 : x
2. Step 2: Convert to fraction form
   118,780/163,925.72 = 67,780.96/x
3. Step 3: Cross multiply
   118,780x = 163,925.72 × 67,780.96
4. Step 4: Simplify right side
   118,780x = 11,111,042,670.29
5. Step 5: Solve for x
   x = 11,111,042,670.29/118,780
6. Step 6: Final answer
   x = 93,543.04