Finding the Fourth Proportional to 139,953,506.86, 193,174,258.38 and 81,235,088.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,953,506.86 : 193,174,258.38 = 81,235,088.98 : x
2. Step 2: Convert to fraction form
   139,953,506.86/193,174,258.38 = 81,235,088.98/x
3. Step 3: Cross multiply
   139,953,506.86x = 193,174,258.38 × 81,235,088.98
4. Step 4: Simplify right side
   139,953,506.86x = 15,692,528,068,144,812
5. Step 5: Solve for x
   x = 15,692,528,068,144,812/139,953,506.86
6. Step 6: Final answer
   x = 112,126,722.80