Finding the Fourth Proportional to 139,953,861.16, 193,174,742.96 and 81,235,443.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,953,861.16 : 193,174,742.96 = 81,235,443.52 : x
2. Step 2: Convert to fraction form
   139,953,861.16/193,174,742.96 = 81,235,443.52/x
3. Step 3: Cross multiply
   139,953,861.16x = 193,174,742.96 × 81,235,443.52
4. Step 4: Simplify right side
   139,953,861.16x = 15,692,635,921,217,598
5. Step 5: Solve for x
   x = 15,692,635,921,217,598/139,953,861.16
6. Step 6: Final answer
   x = 112,127,209.58