Finding the Fourth Proportional to 101,219.83, 139,684.72 and 55,897.67

Step by Step Solution

1. Step 1: Write the proportion equation
   101,219.83 : 139,684.72 = 55,897.67 : x
2. Step 2: Convert to fraction form
   101,219.83/139,684.72 = 55,897.67/x
3. Step 3: Cross multiply
   101,219.83x = 139,684.72 × 55,897.67
4. Step 4: Simplify right side
   101,219.83x = 7,808,050,068.20
5. Step 5: Solve for x
   x = 7,808,050,068.20/101,219.83
6. Step 6: Final answer
   x = 77,139.53