Finding the Fourth Proportional to 78,102.10, 107,780.73 and 42,292.00

Step by Step Solution

1. Step 1: Write the proportion equation
   78,102.10 : 107,780.73 = 42,292.00 : x
2. Step 2: Convert to fraction form
   78,102.10/107,780.73 = 42,292.00/x
3. Step 3: Cross multiply
   78,102.10x = 107,780.73 × 42,292.00
4. Step 4: Simplify right side
   78,102.10x = 4,558,262,094.26
5. Step 5: Solve for x
   x = 4,558,262,094.26/78,102.10
6. Step 6: Final answer
   x = 58,362.87