Finding the Fourth Proportional to 387,692.31, 581,566.22 and 103,381.37

Step by Step Solution

1. Step 1: Write the proportion equation
   387,692.31 : 581,566.22 = 103,381.37 : x
2. Step 2: Convert to fraction form
   387,692.31/581,566.22 = 103,381.37/x
3. Step 3: Cross multiply
   387,692.31x = 581,566.22 × 103,381.37
4. Step 4: Simplify right side
   387,692.31x = 60,123,112,569.32
5. Step 5: Solve for x
   x = 60,123,112,569.32/387,692.31
6. Step 6: Final answer
   x = 155,079.46