Finding the Fourth Proportional to 74,189.89, 102,521.76 and 56,251.63

Step by Step Solution

1. Step 1: Write the proportion equation
   74,189.89 : 102,521.76 = 56,251.63 : x
2. Step 2: Convert to fraction form
   74,189.89/102,521.76 = 56,251.63/x
3. Step 3: Cross multiply
   74,189.89x = 102,521.76 × 56,251.63
4. Step 4: Simplify right side
   74,189.89x = 5,767,016,110.47
5. Step 5: Solve for x
   x = 5,767,016,110.47/74,189.89
6. Step 6: Final answer
   x = 77,733.18