Finding the Fourth Proportional to 139,973.60, 210,041.61 and 58,914.57

Step by Step Solution

1. Step 1: Write the proportion equation
   139,973.60 : 210,041.61 = 58,914.57 : x
2. Step 2: Convert to fraction form
   139,973.60/210,041.61 = 58,914.57/x
3. Step 3: Cross multiply
   139,973.60x = 210,041.61 × 58,914.57
4. Step 4: Simplify right side
   139,973.60x = 12,374,511,701.98
5. Step 5: Solve for x
   x = 12,374,511,701.98/139,973.60
6. Step 6: Final answer
   x = 88,406.04