Finding the Fourth Proportional to 56,838.59, 78,435.42 and 31,346.01

Step by Step Solution

1. Step 1: Write the proportion equation
   56,838.59 : 78,435.42 = 31,346.01 : x
2. Step 2: Convert to fraction form
   56,838.59/78,435.42 = 31,346.01/x
3. Step 3: Cross multiply
   56,838.59x = 78,435.42 × 31,346.01
4. Step 4: Simplify right side
   56,838.59x = 2,458,637,459.67
5. Step 5: Solve for x
   x = 2,458,637,459.67/56,838.59
6. Step 6: Final answer
   x = 43,256.49