Finding the Fourth Proportional to 387,404.06, 581,062.35 and 134,641.94

Step by Step Solution

1. Step 1: Write the proportion equation
   387,404.06 : 581,062.35 = 134,641.94 : x
2. Step 2: Convert to fraction form
   387,404.06/581,062.35 = 134,641.94/x
3. Step 3: Cross multiply
   387,404.06x = 581,062.35 × 134,641.94
4. Step 4: Simplify right side
   387,404.06x = 78,235,362,064.96
5. Step 5: Solve for x
   x = 78,235,362,064.96/387,404.06
6. Step 6: Final answer
   x = 201,947.71