Finding the Fourth Proportional to 112,772.79, 169,093.59 and 42,657.57

Step by Step Solution

1. Step 1: Write the proportion equation
   112,772.79 : 169,093.59 = 42,657.57 : x
2. Step 2: Convert to fraction form
   112,772.79/169,093.59 = 42,657.57/x
3. Step 3: Cross multiply
   112,772.79x = 169,093.59 × 42,657.57
4. Step 4: Simplify right side
   112,772.79x = 7,213,121,651.98
5. Step 5: Solve for x
   x = 7,213,121,651.98/112,772.79
6. Step 6: Final answer
   x = 63,961.54