Finding the Fourth Proportional to 65,722.95, 90,737.82 and 42,774.63

Step by Step Solution

1. Step 1: Write the proportion equation
   65,722.95 : 90,737.82 = 42,774.63 : x
2. Step 2: Convert to fraction form
   65,722.95/90,737.82 = 42,774.63/x
3. Step 3: Cross multiply
   65,722.95x = 90,737.82 × 42,774.63
4. Step 4: Simplify right side
   65,722.95x = 3,881,276,677.51
5. Step 5: Solve for x
   x = 3,881,276,677.51/65,722.95
6. Step 6: Final answer
   x = 59,055.12