Finding the Fourth Proportional to 42,990.30, 64,117.92 and 37,759.73

Step by Step Solution

1. Step 1: Write the proportion equation
   42,990.30 : 64,117.92 = 37,759.73 : x
2. Step 2: Convert to fraction form
   42,990.30/64,117.92 = 37,759.73/x
3. Step 3: Cross multiply
   42,990.30x = 64,117.92 × 37,759.73
4. Step 4: Simplify right side
   42,990.30x = 2,421,075,026.77
5. Step 5: Solve for x
   x = 2,421,075,026.77/42,990.30
6. Step 6: Final answer
   x = 56,316.77