Finding the Fourth Proportional to 56,870.04, 78,482.34 and 31,719

Step by Step Solution

1. Step 1: Write the proportion equation
   56,870.04 : 78,482.34 = 31,719 : x
2. Step 2: Convert to fraction form
   56,870.04/78,482.34 = 31,719/x
3. Step 3: Cross multiply
   56,870.04x = 78,482.34 × 31,719
4. Step 4: Simplify right side
   56,870.04x = 2,489,381,342.46
5. Step 5: Solve for x
   x = 2,489,381,342.46/56,870.04
6. Step 6: Final answer
   x = 43,773.16