Finding the Fourth Proportional to 102,445.54, 141,371.35 and 56,507.00

Step by Step Solution

1. Step 1: Write the proportion equation
   102,445.54 : 141,371.35 = 56,507.00 : x
2. Step 2: Convert to fraction form
   102,445.54/141,371.35 = 56,507.00/x
3. Step 3: Cross multiply
   102,445.54x = 141,371.35 × 56,507.00
4. Step 4: Simplify right side
   102,445.54x = 7,988,470,026.33
5. Step 5: Solve for x
   x = 7,988,470,026.33/102,445.54
6. Step 6: Final answer
   x = 77,977.73