Finding the Fourth Proportional to 78,123.32, 107,810.14 and 42,313.32

Step by Step Solution

1. Step 1: Write the proportion equation
   78,123.32 : 107,810.14 = 42,313.32 : x
2. Step 2: Convert to fraction form
   78,123.32/107,810.14 = 42,313.32/x
3. Step 3: Cross multiply
   78,123.32x = 107,810.14 × 42,313.32
4. Step 4: Simplify right side
   78,123.32x = 4,561,804,953.06
5. Step 5: Solve for x
   x = 4,561,804,953.06/78,123.32
6. Step 6: Final answer
   x = 58,392.36